Light micrograph of egg and sperm. The human female usually produces a single large egg, and only one of the millions of male sperm may penetrate the egg's wall to fuse with the egg nucleus. Once fertilized, the egg begins its process of growth by cell division. Magnification: unknown.

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Creative#:

TOP22233129

Source:

達志影像

Authorization Type:

RM

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須由TPG 完整授權

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N/A

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No

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No

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