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The assembly of actin into a cleavage furrow is accompanied by disassembly of the interphase actin cytoskeleton. A variation of this actin filament disassembly/assembly cycle is seen during cell division in PtK2 cells infected with the intracellular pathogen, Listeria monocytogenes, where F‐actin associates with the bacteria either as a halo surrounding nonmoving bacteria, or as an array of filaments...
De novo assembly of myofibrils was investigated in explants of precardiac mesoderm from quail embryos to address a controversy about different models of myofibrillogenesis. The sequential expression of sarcomeric components was visualized in double- and triple-stained explants before, during, and just after the first cardiomyocytes began to beat. In explants from stage 6 embryos, cultured for 10 h,...
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