Infertility affects one in seven men of reproductive age worldwide. One idea for treating male sterility is spermatogonial stem cell (SSC) therapy. In this approach, sperm stem cells in the testis are transferred to a test tube, cultured and nudged into becoming fully fledged sperm. However, a key bottleneck has been identifying just the right… Read More »
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Delaware is the first state in the U.S. to pass a bill that would allow titers to be given in lieu of rabies vaccines for certain dogs, cats and ferrets. An antibody titer measures the concentration of antibodies in the blood produced after an inflammatory response to vaccination. Measuring the number of antibodies present is… Read More »
Their brains may not be bigger than normal, but monkeys created with human brain genes are exhibiting cognitive changes that suggest they might be smarter — and the experiments have ethicists shuddering. In the wake of the genetically modified human babies scandal, Chinese scientists are drawing fresh condemnation from philosophers and ethicists, this time over… Read More »