Bacteria use a broad variety of membrane transport systems to deliver effectors to other cells and to the outer media. At least 9 different secretion pathways have been described so far, numbered from ...

The distal portions of the nephron, including the distal convoluted tubule (DCT), the connecting tubule (CNT), and the cortical collecting duct (CCD), are essential to fine-tune the excretion of ...

Penile discharge refers to a discharge other than urine, semen, or pre-ejaculate ("pre-cum") from the penis. The discharge is often a sign of an infection in the male urinary or reproductive tract, ...

The Lancet's interactive Picture Quiz Gallery hosts a new picture quiz each month. Play the picture quiz to test your medical knowledge and diagnostic skills. Each quiz is a multi-choice challenge ...