RT-PCR analysis of molecular components associated with the NMDA receptor complex. (A) mRNA expression of NR2A and NR2D was identified in primary human megakaryocytes (MK), while NR2B and NR2C were expressed only by forebrain-positive controls (FB). (B) RT-PCR also identified expression of NMDA-associated proteins Yotiao and PSD-95 by megakaryocytes, but not chapsyn-110, CASK, MALS, or SHANK.