所屬欄目:組織學(xué)與胚胎學(xué)
Bloodconsistsofbloodcellsandbloodplasma,inwhichthebloodcellsaresuspended.Thebloodcellsareerythrocytes(redbloodcells),plateletsandleukocytes(whitebloodcells).Mostmammalianerythrocytesarebiconcavediskswithoutnuclei.Thebiconcaveshapeprovideserythrocyteswitha ......(本文共 1570 字 ) [閱讀本文] >>