TY - RPRT TI - Changes in S1P1 and S1P2 expression during embryonal development and primitive endoderm differentiation of F9 cells. AU - Yuki Hiraga AU - Akio Kihara AU - Takamitsu Sano AU - Yasuyuki Igarashi PY - 2006 DO - 10.1016/j.bbrc.2006.04.002 UR - https://pubmed.ncbi.nlm.nih.gov/16631609/ ID - 16631609 ER -