that would produceが飛んじゃうのね。で、andが違うものをむすびつけちゃう。
low chimaerism (bad chimaeras) and the contribution of GFP positive
ES-derived cells to extraembryonic mesodermということね。でもこの切り方は間違ってるわね。
①that would produce low chimaerism (bad chimaeras)
引き続いて
②the contribution of GFP positive ES-derived cells to extraembryonic mesoderm would in consequence be reduced.
と繋がってるのね。