You walk through a labyrinth of MIT buildings and into what looks like a typical laboratory: white walls and clean counters, the constant buzz of machines, the clutter of pipettes. In the corner, you ...

Many babies have blood in their stool during infancy. Small anal fissures and other minor conditions may cause blood streaks in a baby’s stool. Black stools or severe bloody diarrhea may indicate a ...

Black specks in stool may be due to undigested food, such as blueberries. However, they can also be a sign of internal bleeding or liver problems. In newborns, black stool may be meconium. Daily ...

According to the Animal Welfare Act, the IACUC should determine that the principal investigator has considered alternatives to procedures that may cause more than momentary or slight pain or distress ...