Histamine

Histamine is a signaling chemical best known for its role in allergic reactions. When the immune system detects a foreign substance or allergen, specialized cells like mast cells and basophils release histamine. This triggers an inflammatory response, causing blood vessels to dilate and become more permeable, which leads to common allergy symptoms like a runny nose, sneezing, and itching as the body tries to expel the perceived threat. Beyond allergies, histamine also functions as a neurotransmitter in the brain, where it helps regulate the sleep-wake cycle and cognitive function, and it plays a part in stimulating stomach acid secretion. Explore searchable catalogue of hundreds of molecules, including details on how models were generated. Notes If you happen to break something, use superglue to fix it. It will make the broken part even stronger. I decided to go with the ball-and-stick type, as it is easiest to color, is rigid, and looks awesome. The model represents the major resonanc