The effects of different concentrations of etoposide and cycloheximide (ETO-CHXM), used for chemical enucleation of mouse oocytes, on polar body extrusion and chromatin expulsion were tested. The developmental ability of blastomeres of late 2-cell stage embryos fused to chemically enucleated oocytes of different ages or cytoplasts from different sources was also examined in vitro. Metaphase I o...

P-selectin plays a crucial role during hematogenous metastasis, and the blockade of P-selectin binding to its ligand can attenuate metastasis in various tumor models. Heparin or chemically modified heparins with decreased anticoagulant activities exhibit marked inhibitory effects on P-selectin-mediated adhesion. Here, we prepared chemically modified heparins with reduced anticoagulant activitie...

We demonstrate here that thiol-ene chemistry can be used to provide side-chain functionalized monomers based on 3,4-propylenedioxythiophene (ProDOT) containing ionic, neutral, hydrophobic, and hydrophilic side chains. All reactions gave high yields and purification could generally be accomplished through precipitation. These monomers were polymerized either chemically or electro-chemically to g...