School of Arts & Sciences
PHILADELPHIA –- Biologists at the University of Pennsylvania studying oocytes in mice, the immature egg cells necessary for sexual reproduction, have demonstrated an unusual behavior in microRNA, or miRNA, activity that may be the first event in reprogramming the differentiated oocyte into pluripotent blastomeres of the embryo. MicroRNAs are a member of the family of small RNAs, the so-called dark matter of the biological world.
PHILADELPHIA – The University of Pennsylvania “Global Go To Think Tank Rankings” places the Brookings Institution first among more than 6,300 think tanks evaluated worldwide. The annual report places Chatham House first in a separate category for the best think tanks in the world outside the U.S.