The Male Sex Cell

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The two sexes have different sexual organs, and different secondary sex characteristics. They also often have different biological functions. The female gives birth

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Figure 1. Morphology and Histopathology of the Genital Tracts in Male Mice Infected with ZIKV (A) Morphology of the male genital tract from an uninfected WT mouse.

The NIH plans to address the issue of sex and gender inclusion across biomedical research multi-dimensionally — through programme oversight, review and policy, as

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Organisms of many species are specialized into male and female varieties, each known as a sex, with some falling in between being intersex. Sexual reproduction

A male organism is the physiological sex that produces sperm. Each spermaton can fuse with a larger female gamete, or ovum, in the process of fertilization.

The Biology of Sex. In this special Cell Picture Show, presented by Current Biology, we pay homage to the fascinating biology of sex. Sex is a paradoxical phenomenon

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A typical male has XY chromosomes, and a typical female has XX. But owing to genetic variation or chance events in development, some people do not fit neatly into

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