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Posts tagged egg

September 27, 2003

 

Depo-provera

Depo-provera is the brand name of a method of birth control that consists mostly of a hormone much like progesterone, a hormone that works with estrogen to regulate the menstrual cycle.

September 27, 2003

 

Ride the Sperm Train

The female wood mouse has multiple mates, so the sperm of this wood mouse may be competing with sperm from other males.

September 27, 2003

 

The Spider: Predator or Prey?

A female wasp stings a spider in her own web, temporarily paralyzing her. Then the wasp lays an egg on the spider’s abdomen. The paralysis wears off, and the spider gets up and goes about her business as usual.

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