Complex sentence: Women with an earlier male pregnancy T cells were previously exposed to these H-Y antigens recognizing them quicker, and it has been found that women with recurrent miscarriage also contain MHC II with ability to present these antigens to T helper cells (CD4 +).
Split into simpler sentences: Women with an earlier male pregnancy have T cells which were previously exposed to these H-Y antigens, and consequently recognize them quicker. It has been found that women with recurrent miscarriage also contain MHC II with ability to present these antigens to T helper cells (CD4 +).