所属栏目:组织学与胚胎学
Bloodconsistsofbloodcellsandbloodplasma,inwhichthebloodcellsaresuspended.Thebloodcellsareerythrocytes(redbloodcells),plateletsandleukocytes(whitebloodcells).Mostmammalianerythrocytesarebiconcavediskswithoutnuclei.Thebiconcaveshapeprovideserythrocyteswitha ......(本文共 1570 字 ) [阅读本文] >>