Fig10.38 Naive CD4 T cell Splicing of the CD45 gene transcript in naive T cells includes the A.B.and C exons DNA CD4ERA mRNA,protein TOCD3 Memory/effector In memory/effector T cells,splicing of the CD45 transcript CD4 T cell excludes the A.B.and C exons 0 CD45RO DNA B mRNA.protein @1999 Elsevier Science/Garland Publishing