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您的检索式：作者名="MA Suofeng"
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| 1 | Sources of cumulus expansion enabling factor (CEEF) in porcine follicles显示文摘It was shown that expansion of porcine cumulus did not depend on oocyte-secreted factor(s), and it is therefore presumed that porcine CEEF may not be produced exclusively by the oocyte. In this experiment, we used mouse oocytectomized complexes (OOX), which were incapable of CEEF production, to assess the secretion of CEEF by evacuated zona, oocytes of different quality and somatic cells in the porcine follicles. The results showed that: (i) Evacuated zonae from both porcine and mouse oocytes did not produce CEEF. (ii) Porcine oocytes of A, B and C types from 3-6 mm follicles were not significantly different in both production and activity of CEEF. (iii) Both porcine OOX from 3-6 mm follicles and granulose cells from < 1 mm follicles secreted CEEF in a large quantity, independent of gonadotro-pins; mural granulose cells from 3-6 mm follicles, however, produced neglectable amount of CEEF. (iv) The follicular fluid from 3-6 mm porcine follicles contained CEEF activity that was concentration-dependent, | SUN Xingshen YUE Kuizhong MA Suofeng YI Yaling ZOU Yi TAN Jinghe | 2002 | Chinese Science Bulletin2002，47，19： | 0 |
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