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Life

Sex between two males is extremely common in wild macaque monkeys

Almost three-quarters of male macaques observed by scientists mounted other males, and the behaviour may help to strengthen alliances

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Microscope image of Krause corpuscles

Health

Neurons that respond to vibration discovered in the clitoris and penis

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Humans

Humans were kissing at least 4500 years ago, reveal ancient texts

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Health

Electrically stimulating the clitoris could treat low libido in women

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A transmission electron micrograph of a colony of Gardnerella vaginalis , bacteria that are found in vaginas and the urethras of men who have vaginal sex

Health

The microbiome inside the penis can be altered by vaginal sex

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Interracial heterosexual couple holding hands at home. Millennial young love between two different races; Shutterstock ID 1493320925; purchase_order: -; job: -; client: -; other: -

Humans

Impulse review: An authoritative, if dry, sexual behaviours manual

Culture

Artificial tissue that mimics connective tissue in the penis restored erectile function in pigs with an injured penis

Health

Synthetic tissue restores erections in pigs with penis injuries

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Fruit fly

Life

Male flies produce a chemical that makes females sleep in after mating

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The Amami spiny rat

Life

A rat without a Y chromosome could be a glimpse of our genetic future

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Couple in bed

Health

Vaginal immune activity increases after having sex for the first time

Levels of immune system proteins in the vagina increase after having vaginal intercourse for the first time, suggesting the body is responding to being exposed to new bacteria

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Health

Personal lubricant made from cow mucus may protect against HIV

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Health

Female emission at orgasm confirmed to release fluid from the bladder

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Life

Monkeys in Bali use stones as sex toys to fill their leisure time

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Health

Long covid symptoms may include hair loss and ejaculation difficulties

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