FASCINATION ABOUT 6''-O-ACETYLSAIKOSAPONIN A

S1P receptor–mediated sensing of elevated S1P amounts while in the blood and lymph serves for a common mechanism to trigger the egress of hematopoietic cells from tissues in the circulation (Figure 3). S1P1 expression on T and B cells stimulates their exit from lymphoid tissues, with very low S1P degrees, into blood or lymph, with superior S1P am