Medical Definition of lymphocyte transformation
: a transformation caused in lymphocytes by a mitosis-inducing agent (as phytohemagglutinin) or by a second exposure to an antigen and characterized by an increase in size and in the amount of cytoplasm, by visibility of nucleoli in the nucleus, and after about 72 hours by a marked resemblance to blast cells
Seen and Heard
What made you want to look up lymphocyte transformation? Please tell us where you read or heard it (including the quote, if possible).