(Britain) A disease characterized by sickle-shaped red blood cells.

A cell that forms four megaspores by meiosis; a megasporocyte.

(oncology) A giant lymphocyte characteristic of Hodgkin's lymphoma.

An electric battery employing a zinc-carbon dry cell.

(immunology) A cytotoxic T cell.

(immunology) A subtype of T cell, capable of inducing death in infected somatic or tumor cells.

(immunology) Any cell that expresses cell surface receptors that deliver signals to either activate or inhibit a response as part of the innate immune system.

(medicine) A disease characterized by sickle-shaped red blood cells.

(Canada, US) A disease characterized by sickle-shaped red blood cells.

(anatomy) A specific type of cell, found in lymphoid follicles having filiform dendrites that bind and present immune complexes to B cells.