work

Galleries and Reading Room

Library

Shop

Café

We're experiencing some technical problems in the library today. 

If you’re visiting us, you won’t be able to print or use our PCs or laptops. If you want to sign-up for a free library membership, we’ll give you a temporary card for today and complete your membership next time you visit.

You can access items from the collection as usual and our team is on hand to help. Thank you for your patience while we resolve these issues. 

We're running paid user research studies to improve Wellcome Collection online

Take part in research

Transmission electron micrograph of a mouse
blastocyst 4 das after fertilisation. The cells of
the inner cell mass are clustered below the
blastocele cavity.

TEM of mouse blastocyst

Selected images from this work

About this work

Description

Contributors

Subjects

Permanent link