All experiments described were approved by our IACUC. We used male ICR mice that were 8–12 weeks old (Harlan Laboratories, Jerusalem, Israel). Mice were housed in an air-conditioned room at 25 °C.

Long-term fasting in 24-hour cycles increases the sex drive of male mice by lowering the concentration of the neurotransmitter serotonin in the brain. This effect is linked to a diet-induced ...

They deleted all four genes in mice and found that male mice without them were sterile. Although their sperm could fertilize eggs in a lab dish, they could not do so naturally because they failed to ...

They deleted all four genes in mice and found that male mice without them were sterile. Although their sperm could fertilize eggs in a lab dish, they could not do so naturally because they failed to ...