CELL OF THE DAY!!!! Our colorful friend in the middle is a plasma cell…but just not any kind of plasma! This little guy is the elusive Flame Cell. So named because of the purple to red hue emanating from the cytoplasm. This atypical coloration arises due to enlarge endoplasmic reticulum cisterns plugged with antibody (recall plasma cells create immunoglobulin). This distension alters the normal cytoplasm staining, making it fiery cool!