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Repeated Pregnancy Loss May Be Tied to the Olfactory System

Understanding the connection could lead to a new search for the causes of unexplained spontaneous miscarriage


Genes that are mostly active in one sex or the other may play a crucial role in our evolution and health  

 Locations of different opsins on the human sperm, viewed under a microscope, are revealed by labeling with a fluorescent antibody (bright yellow)

Proteins better known as visual sensors play a role in the heat-seeking movement of sperm...

Clusters of human embryonic stem cells that were differentiated to an early germ cell (PGC) state (colored cells). Each color reveals the expression of a different gene. (l-r) NANOS3, NANOG, OCT4 and, on the right, all three combined in a single image

A cell programming technique developed at the Weizmann Institute turns them into the earliest...

Genes that affect only half the population will have double the mutation rate

Weizmann Institute researchers explain why genetic fertility problems can persist in a population


Where Have all the Mitochondria Gone?

Weizmann Institute researchers shed light on a crucial step in fertilization

Mature oocyte, ready for fertilization; surrounding the oocyte are follicle cells

What keeps the eggs in the ovary from maturing until the time comes for ovulation?

Pregnant Venus. The other side of stress molecules

The “stress” molecules eliminated by common food supplements play a positive role in ovulation.

Weizmann Institute Scientists Discover: Antioxidants Cause Fertility Problems in Females
Antioxidants are sold over the counter everywhere. They’re added to food, drink and face cream. But according to Prof. Nava...