Licence: Attribution 4.0 International (CC BY 4.0)
Credit: SEM human alveoli,low power, stereoscopic,RH. David Gregory & Debbie Marshall. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: SEM human alveoli,low power, stereoscopic,RH. David Gregory & Debbie Marshall. Source: Wellcome Collection.