Basophil

Basophils are the least common form of granulocyte in the White blood cell family. They circulate the body in the blood stream and can be recruited into a tissue when needed.

These cells have large granules containing histamine in their cytoplasm, hence why they fall into the granulocyte family. They have a multi-lobed nucleus, usually it's 2 lobes. The basophil cell secretes histamine in response to a foreign antigen. It is connected to inflamatory responses, and in particular allergic responses.