Biological Sciences

Why Do I Blush at the Start of a Speech?

The mechanics of how a blush happens are straightforward. Underneath the skin of your face and neck is a lacework of tiny blood vessels called capillaries, which dilate under the influence of adrenaline to allow more blood and oxygen to flow. And a blush isn’t something you can fake. Unlike most human expressions, you can’t force a blush to appear on your face. (Or, sadly, demand that your capillaries shrink back to size.) (Read the full story)

Rare Mutations May Not Always Spur Breast Cancer on Their Own

Results of a new laboratory study suggest that some rare “missense” mutations in the HER2 gene are apparently not — on their own — capable of causing breast cancer growth or spread. In a related finding, the Johns Hopkins research team said such mutations, which are found in about 5 percent of breast cancers, may, thus, also fail to predict response to anti-cancer drugs…(Read the full story)

Researchers Link Organ Transplant Drug to Rise in Rare Lymphoma

A study led by Johns Hopkins researchers has linked the immunosuppressive drug mycophenolate mofetil (MMF) to an increased risk of central nervous system (CNS) lymphoma in solid organ transplant patients. But the same study also found that another class of immunosuppressive drugs, called calcineurin inhibitors (CNIs), appears to protect transplant patients against this rare form of lymphoma. (Read the full story)