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Home > All Images > 1992 > January > 16 Jan 1992

Images Dated 16th January 1992

Choose from 13 pictures in our Images Dated 16th January 1992 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Artwork of a human egg cell Featured 16 Jan 1992 Print

Artwork of a human egg cell

Artwork of a human egg cell in the primordial follicle phase which occurs after seven months of fetal development. The egg cell is surrounded by a thick layer of follicular cells known as zona granulosa and then by zona pellucida, the yellow glycoprotein layer. The round body at the centre is the nucleus which has three endoplasmic reticulums attached to it. The nucleus contains DNA and RNA, a large quantity of protein called nucleoprotein and enzymes responsible for DNA and RNA synthesis. RNA is synthesised in the nucleolus, the sponge-like structure within the nucleus. At the bottom right is a Golgi body

© FRANCIS LEROY, BIOCOSMOS/SCIENCE PHOTO LIBRARY