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Photograph of a wire model of A-type DNA referenced as "Crystalline DNA structure A Model"

Produced by the MRC Biophysics Research Unit/Department of Biophysics, King's College London.

King's College London Department of Biophysics

KCL Department of Biophysics: glass and acetate slides ('quarter plates', 'whole plates' and 'half plates') relating to the work of the Medical Research Council (MRC) Biophysics Research Unit (KCL Department of Biophysics from 1964)

KCL Department of Biophysics: quarter plate series: slides of images relating to research conducted in the Biophysics Unit and subsequently Department of Biophysics

Photographic image referenced as a "Reflecting Microscope"

Photographic image referenced as "Reflecting Microscope"

Graph referenced as "Absorption spectra of purines, pyrimidines and nucleic acids"

Graph referenced as "Microphotometer recordings of thymine spectrum at room temperature and at 90 k [Kelvin]"

Schematic diagram referenced as "Absorption cell for low temperature studies"

Schematic diagram referenced as "Ultraviolet achromatic refraction objective 1.24 NA [numerical aperture]"

Diagram referenced as "Middle piece and tail of a ram spermatozoa"

Diagram referenced as "Head structure of ram spermatozoa"

Diagram referenced as "Circular scales for angle measurements"

Diagram referenced as "Circular dial 1-100"

Printed diagram referenced as "Generalized drawing of mammalian sperm"

Printed diagram captioned as "Drawings of different mammalian sperms"

Printed diagram of a transverse section of seminiferous tubule in a mammal referenced as "Mammalian sperm heads"

Printed diagram captioned as "Drawing of the stages of spermatogenesis in mammals"

Printed diagram captioned as "Drawing of the stages of spermatogenesis in guinea pigs"

Printed graph referenced as "Ethyl-alcohol in CCl4 [carbon chloride] layer 1mm (1-3) and 5mm (4-6)"

Printed graph referenced as "absorption spectrum of methyl alcohol in carbon tetrachloride solutions"

Table captioned as "Fine structure in ultra-violet absorption spectra of some purines, pyrimidines, amino acids, nucleosides etc. "

Microscopic image of cellular structure [no reference]

Ultra-violet absorption spectra image and path length recordings referenced as "Ultra-violet absorption spectra of para and ortho substituted phenols"

Ultra-violet absorption spectra and path length recordings referenced as "Ultra-violet absorption spectra of pyridine bases"

Ultra-violet absorption spectra image and path length recordings referenced as "The effect on the ultra-violet absorption spectrum of substituting an octyl group in the othro position to a hydroxyl group"

Microscope image referenced as "Effect of ultrasonics upon mitosis sticky chromosome bridges"

Graph showing ultra-violet absorption curves relating to the effect of ultrasonics on nucleic acids referenced as "Effect of ultrasonics in nucleic acids. U.V. Absorption curves"

Copy of J M M Pinkerton's paper, "On the Pulse Method of Measuring Ultrasonic Absorption in Liquids" in Proceedings of the Physical Society, Section B, Volume 62, Number 5, 1949.

Series of microscopic images of Tobacco Mosaic Virus (TMV) crystals referenced as "TMV crystals"

Photograph referenced as "Mechanical parts of reflecting objective"

Microscope image referenced as "Autoradiography of newt cells"

Copy of a photographic print referenced as "Accelerated flow method for rapid reactions"

Copy of a photographic print referenced as "Accelerated flow apparatus and amplifier"

Copy of a photographic print referenced as "Accelerated flow apparatus"

Graph referenced as "Ultra-violet absorption spectrum of nuclear sap"

Copy of a photographic print referenced as "Cassor double beam oscilloscope. Chassis from underneath"

Graph referenced as "Micro-photometer record across chick fibroblast and wedge"

Photographic image referenced as "Phase annali"

Microscopic image referenced as "Ferric oxide solution X13,000"

Microscopic image referenced as "Wyoming Bentonite. Large particle size x 13000"

Microscopic image referenced as "Wyoming Bentonite. Small particle size E.S.D. 15-20 mp"

Copy of a printed table of the structural data of minerals in clay referenced as "Structural data of minerals (Clay)"

Microscope image referenced as "Autoradiograph 28 day exposure"

Microscope image referenced as "Autoradiograph, newt normal 20 days"

Microscope image referenced as "Autoradiograph 5 days"

Microscopic image referenced as "Vanadium pentoxide solution aged x13,000"

Microscopic image referenced as "Vanadium pentoxide solution fresh x13,000"

Table referenced as "Reflecting objectives 0.18"

Photographic image referenced as "Interferogram 0.79 N.A. [numerical aperture] 33% [central obstruction] 0.21"

Photographic image referenced as "Interferogram 0.54 N.A. [numerical aperture] 35% [central obstruction] 0.24"

Photographic image referenced as "Tobacco mosaic virus (T.M.V.) 7 Interchanging bands"

Photographic image referenced as "Tobacco mosaic virus (T.M.V.) 12 Helical contour"

Schematic diagram referenced as "Amici component N.A. [numerical aperture] 1.4"

Microscopic image of unknown cellular structure [no reference].

Hand-drawn graph referenced as "Absorption curves for two constituents of chick fibroblast in tissue culture"

Diagram referenced as "Measuring grid"

Microscopic image referenced as "Mitotic cells in a chick"

Diagram referenced as "Microphotometer dial"

Schematic diagram referenced as "Diagram of apparatus. Optical paths"

Copy of a printed diagram of extinction curves in the ultraviolet absorption spectrum referenced as "Extinction curves"

Schematic diagram referenced as "Clocking system. Exposure times"

Graph referenced as "Microphotometer trace through a living cell"

Graph referenced as "Microphotometer trace at 312. Irradiation nuclei"

Graph referenced as "Microphotometer trace at 265. Irradiation nuclei"

Graph referenced as "Measurement of absorption in irradiated cells"

Graph referenced as "Measurements of absorption of a living irradiated cell"

Schematic diagram referenced as "Optical paths in apparatus"

Graph showing ultra-violet absorption curve referenced as "Extractions from bean root tips"

Graph referenced as "Ultra-violet absorption curve of in vitro and in root lip extract"

Diagram referenced as "Generalized diagram of mammalian sperm"

Diagram referenced as "Diagram of head of ram sperm"

Diagram referenced as "Diagram of middle piece transverse section R.S. 7"

Diagram referenced as "Diagram of middle piece of ram sperm. Longitudinal section"

Diagram referenced as "Diagram of head of ram sperm. Cross sections through tail and fibrils"

Diagram referenced as "Diagram of head of ram sperm showing axes of symmetry"

Microscope image referenced as "Ram spermatozoa paper. Plate I"

Microscope image referenced as "Ram spermatozoa paper. Plate II"

Microscope image referenced as "Ram spermatozoa paper. Plate III"

Microscope image referenced as "Ram spermatozoa paper. Plate IV"

Microscope image referenced as "Ram spermatozoa paper. Plate V"

Microscope image referenced as "Ram spermatozoa paper. Plate VI"

Graph referenced as "I.R. Herring sperm nuclear protein"

X-ray diffraction exposure referenced as "Human white blood cell"

X-ray diffraction exposure of DNA referenced as "Mouse S180 DNA"

X-ray diffraction exposure of DNA referenced as "Human DNA (M.A.P.)"

X-ray diffraction exposure of DNA referenced as "Parocen Protus DNA"

X-ray diffraction exposure of DNA referenced as "J.rl. (Str) Film No 106"

X-ray diffraction exposure of DNA referenced as "Mouse DNA (K Br)"

Template referenced as "2nd layer plane"

Graph relating to A-type DNA referenced as "Intensity of spots in a [Fourier] transform of DNA "A""

Drawing of the structure of DNA referenced as "Double Helix. Diagram"

Representation of the distribution of atoms referenced as "Radial distribution of atoms"

X-ray diffraction exposure referenced as "Herring N.P. [nucleoprotein]"

X-ray diffraction exposure referenced as "Sepia sperm at 98% R.H. [relative humidity] Film No. 112"

X-ray diffraction exposure referenced as "Signer sheet. Copper and Ni filter. 96% pH exposure 4 hours"

X-ray diffraction exposure referenced as "Dry hydrogen at low humidity. Signer filters. Copper. Stubbins camera"

X-ray diffraction exposure referenced as "90% R.H. [relative humidity] Signer fibres cobalt. Exposure prior to drying salt. Stubbins camera"

Photograph of scientific apparatus referenced as "Base plate and film holder support - back step tube and collinator stand for tilting micro camera"

Photograph of scientific apparatus referenced as "Base plate and film holder support - and back step tube of tilting micro-camera"

Photography of scientific apparatus referenced as "Film holder and specimen carrier unit for tilting micro-camera"

Photograph of scientific apparatus referenced as "Collinator stand of tilting micro-camera"

Photograph of scientific equipment referenced as "Specimen carrier of tilting micro-camera"

X-ray diffraction exposure of sodium salt (Na) A-type DNA referenced as "Na DNA. Structure A. Tilted for 9th layer line. Shows 11th layer overidial arc"

X-ray diffraction exposure of DNA referenced as  "Mixture pattern. A + B. Phillips micro-camera"

Table referenced as "Interference results x-ray comparison"

Photograph of scientific apparatus referenced as "Rear view of specimen-film hold for tilting camera"

Graph referenced as "R-space diagrams. Structure B. (sic). X-ray diffraction pattern shown in Plate 867"

Fourier map of sodium salt (Na) DNA referenced as "M2 Na DNA. Section O"

Fourier map of sodium salt (Na) DNA referenced as "M Map Na DNA Section 1"

Fourier map of sodium salt (Na) DNA referenced as "M Map Na DNA Section 2"

Fourier map of sodium salt (Na) DNA referenced as "M Map Na DNA Section 3"

Fourier map of sodium salt (Na) DNA referenced as "M Map Na DNA Section 4"

Fourier map of sodium salt (Na) DNA referenced as "M Map Na DNA Section 5"

Fourier map of sodium salt (Na) DNA referenced as "M Map Na DNA Section 6"

Fourier map of sodium salt (Na) DNA referenced as "M Map Na DNA Section 7"

X-ray powder diffraction exposure of a disintegrated sodium (Na) salt DNA fibre referenced as "Powder diagram from disintegrated Na DNA fibre"

"Vacuum ultra-violet spectrum of pyridmine"

"Vacuum ultra-violet spectrum of maleic anhydride"

Photograph of scientific apparatus referenced as "Vacuum ultra-violet monochromator prism drive mechanism"

"Vacuum ultra-violet spectrum of dimethyl priacetylene"

"Vacuum ultra-violet spectrum of formamide"

X-ray diffraction exposure of DNA referenced as "Transforming p.p.b. [transforming principle bacteria] DNA (Str)"

X-ray diffraction exposure of DNA referenced as "Human DNA M.A.P. III p.15"

Histogram referenced as "Reciprocal space plot of X-ray reflexions from x-tallins DNA"

X-ray diffraction exposure of DNA referenced as "Sepia sperm at 98% R.H. [relative humidity]"

Schematic diagram captioned as "Schematic projection, on the A-C Plane, of the configuration of phosphorus atoms found in structure A [DNA], in one helical unit" Originally referenced as "projection of phosphorus atoms on A-C plane SDN-A"

"3 dimensional Patterson AB. Sections. Reflected 8-15 SDN"

"3 dimensional Patterson minimal function SDN showing P atoms 0-8 sections"

Diagrams captioned as "Projections of the four possible helical arrangements of the phosphorous atoms in one turn of structure A" Referenced as "orientation of helix (SDN)"

"3 dimensional pattern 0-15 showing P-P vectors (SDN)"

Histogram referenced as "Calculated and observed form function of Structure 'A'  [DNA]"

Histogram referenced as "Ion function of tilted rods arranged on a helix DNA"

Histogram referenced as "Calculated and observed form function of Structure 'B' [DNA]"

Diagram referenced as "Hydrated sodium in structure 'A' [DNA] 4H2O "

Diagram referenced as "Hydrated sodiums in structure 'B' [DNA] 6H2O"

X-ray diffraction exposure of DNA referenced as "Crystalline Str-DNA. Transforming ppl. [transforming principle] Film No230"

X-ray diffraction exposure referenced as "Extracted nuclear protein. Film No 192"

X-ray diffraction exposure referenced as "Crystalline DNA with spots up and down. [Film]No 278"

X-ray diffraction exposure of B-type DNA from a calf thymus referenced as "Structure 'B' Calf Thymus DNA Film No 244"

X-ray diffraction exposure of potassium salt (K) DNA referenced as "K-DNA. Film No 251"

X-ray diffraction exposure of B-type DNA referenced as "Structure 'B' RB3- 147 DNA C2 Film No 171"

X-ray diffraction exposure referenced as "T. Ppl [transforming principle] DNA Microcamera with RNA. Film No 253"

X-ray diffraction exposure of DNA from a calf thymus referenced as "Calf Thymus DNA. Microcamera photograph. Film No 231"

X-ray diffraction exposure of DNA referenced as "Avian tubercle DNA. Microcamera photograph. Film No 245"

X-ray diffraction exposure of DNA referenced as "Arbacia DNA. Microcamera photograph. Film No 219"

X-ray diffraction exposure of DNA referenced as "Mouse DNA tilted. Microcamera photograph. Film No 97"

X-ray diffraction exposure of B-type DNA from a calf thymus referenced as "Structure 'B' Calf Thymus DNA Film No 272"

X-ray diffraction exposure of A-type DNA referenced as "High resolution structure 'A' Film 'B'"

Diagram referenced as "Crystalline sperm heads. Diagrammatic representation of structure"

Diagram representing general x-ray diffraction patterns relating to helical structures referenced as "Diagrams of sheared helices"

Molecular diagram referenced as "Pairing of bases in DNA"

Diagram referenced as "Projection of Structure A DNA and the position of the heavy atom within it"

Microscope image referenced as "DNA Ω [omega] 1 x8"

Microscope image referenced as "DNA Ω [omega] 2 x 8"

X-ray diffraction exposure of DNA from calf thymus referenced as "Calf Thymus DNA 75% R.H. [relative humidity] Film No. 321 (Simmons)"

X-ray diffraction exposure of DNA referenced as "Avian tubercle DNA at 92% R.H. [relative humidity]"

X-ray diffraction exposure of DNA referenced as "Simmon's calf thymus DNA at 92% R.H. [relative humidity] Film No 343"

Diagram explaining the process of x-ray diffraction in DNA referenced as "Diffraction of X-rays in DNA"

Diagram  referenced as "Diffraction from simple helix"

Diagram referenced as "Transform of various helixes"

Diagram showing the  molecular space-filled model of B-type DNA referenced as "DNA structure 'B' (Diagram)"

Copy of a printed graph captioned as "Fourier Coefficients Directly From Crystal Diffraction Data" referenced as "Unitary structure factors"

X-ray diffraction exposure of B-type DNA referenced as "Structure B DNA Film No.373"

X-ray diffraction exposure referenced as "Keratin (Fenghelman)"

X-ray diffraction exposure of DNA referenced as "Positive DNA in (tension) Film No 368"

X-ray diffraction exposure referenced as "TNP. DII (Butler)"

X-ray diffraction exposure of RNA referenced as "Butler's RNA at 75% R.H. [relative humidity] Film [No] 282"

Histogram referenced as "Observed and calculated transform DNA 'B'"

Histogram referenced as "Observed and calculated nucleoprotamine"

Histogram referenced as "Valuation of equatorial spacing with humidity DNA"

"Optical transform DNA 'B'"

X-ray diffraction exposure of DNA referenced as "DNA Polysine. Film No 365"

X-ray diffraction exposure of DNA referenced as "E.coli DNA 96% RH [relative humidity] Film 430"

X-ray diffraction exposure referenced as "Calf thymus nucleohistone 98% R.H. [relative humidity]"

X-ray diffraction exposure of DNA referenced as "E coli DNA 96% R.H. [relative humidity] Film 430"

X-ray diffraction exposure referenced as "Bull sperm 98% R.H. [relative humidity]"

X-ray diffraction exposure referenced as "Chick arythrocyte nuclei fibres film No. 414"

X-ray diffraction exposure referenced as "DNA protamine. Film No. 361"

Photograph of a wire model of A-type DNA referenced as "Crystalline DNA structure A Model"

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