Objective: To study the effects of neutral jujube date polysaccharide (JDP-N) on the proliferation of rat splenocytes and [Ca2+], in concanavali-A (ConA)-activated spelnocytes. Methods The proliferation of rat splenocytes was determined by MTT assay and [Ca2+]. by laser scanning confocal microscope. Results JDP-N promoted the auto-proliferation of the splenocytes and enhanced mined lymphocyte reaction. In contrast, the proliferation of ConA-activated splenocytes did not undergo any visible changes in resp...