Which white blood cell type has granules that stain dark purple in response to alkaline dye? A Basophil B Eosinophil C Neutrophil D Granulocytes

The white blood cell type that has granules staining dark purple in response to alkaline dye is:<br /><br />(A) Basophil<br /><br />Basophils contain granules that stain dark purple or blue when exposed to basic (alkaline) dyes. These granules contain histamine and heparin, which play a role in inflammatory responses and allergic reactions.