Women living in the 17th to 19th centuries had a slightly lower life expectancy if they gave birth to multiple sons, rather than to daughters.
Women living in the 17th to 19th centuries had a slightly lower life expectancy if they gave birth to multiple sons, rather than to daughters.
One gene involved in speech produces more of its protein in the brains of young girls than boys.
Researchers reveal a new pathway of synaptic modulation in the hippocampus exclusive to females.
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