LM of mitotic cell division in the human embryo

LM of mitotic cell division in the human embryo

P672/0003

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Caption

Light micrograph of the results of a mitotic cell division in the human embryo, showing the 2 daughter cells produced. Cell division begins within hours of the zygote being produced by the fertilisation of the egg (ovum) by a single spermatozoon. The single cell of the zygote divides into 2, the 2 cells become 4, and so on. At this stage pregancy is not yet established; the zygote needs only to be in a fluid environment of progesterone (1 of the 2 main types of female steroid sex hormones) in order to divide. Progesterone also acts to transform the lining of the uterus to receive the fertilised egg.

Release details

Model release not required. Property release not required.

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