Tag Archives: cells

Scientists find evidence that novel coronavirus infects the mouth’s cells

An international team of scientists has found evidence that SARS-CoV-2, the virus that causes COVID-19, infects cells in the mouth. While it’s well known that the upper airways and lungs are primary sites of SARS-CoV-2 infection, there are clues the virus can infect cells in other parts of the body, such as the digestive system,… Read More »

Bee Venom Could Kill Some Tumor Cells

European honeybees (Apis mellifera) are a source of invaluable medicinal substances, including honey, propolis and venom, which humans have used medicinally for millennia.1 The searing pain that accompanies a bee sting is due to bee venom excreted from the bee’s stinger and into the target, such as your finger. While bee venom contains a complex… Read More »

Human Sperm Stem Cells Grown in Lab, an Early Step Toward Infertility Treatment

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 »

How cells recognize uninvited guests

Until now, the immune sensor TLR8 has remained in the shadows of science. A research team led by the University of Bonn has now discovered how this sensor plays an important role in defending human cells against intruders. The enzymes RNaseT2 and RNase2 cut ribonucleic acids (RNAs) of bacteria into small fragments that are as… Read More »