passages.id: split_5_test_1871_passage
passages.type: progene_text
passages.text: However , whereas Plx1 is more active in M phase than in I phase ( P. Descombes and E. A. Nigg ( 1998 ) EMBO J. 17 , 1328 - 1335 ) , Plx3 protein and activity levels remained constant upon release of meiotic metaphase II - arrested egg extracts into interphase .