Autolysis of Fertilized and Unfertilized Echinoderm Eggs

Regionalization and lateral diffusion of membrane proteins in unfertilized and fertilized mouse eggs

The unfertilized mouse egg has a round and highly villated main body and a "nipple" that is unvillated and buds off on fertilization to form the second polar body. Fluorescent markers stain the body more intensely than the nipple, which has been assumed to result from surface amplification due to microvilli. Using fluorescence recovery after photobleaching and microfluorescence photometry, we h...

The metabolism of fertilized and unfertilized sea-urchin eggs; the action of light and carbon monoxide.

Uptake of Deuterium into Proteins of Fertilized and Unfertilized Arbacia Eggs Suspended in Heavy Water

When fertilized and unfertilized eggs of Arbacia punctulata are suspended in heavy water, deuterium is incorporated into stable positions in the egg proteins. The rate of incorporation of the isotope is considerably greater in fertilized than in unfertilized eggs, and is accelerated at the time of formation of the blastula. The result of calculation of the maximum deuterium concentration which ...

Regionalization and Lateral Proteins in Unfertilized and Diffusion of Membrane Fertilized Mouse Eggs

The unferti l ized mouse egg has a round and highly villated main body and a "n ipp le" that is unvil lated and buds off on ferti l ization to form the second polar body. Fluorescent markers stain the body more intensely than the nipple, which has been assumed to result from surface amplif ication due to microvill i. Using fluorescence recovery after photobleaching and microfluorescence photome...

Histochemical demonstration of phosphorylase and UDPG-glycogen transferase in fertilized and unfertilized mammalian eggs.

In mammalian eggs, glycogen may well play an important role as an energy source during cleavage. Although the presence of glycogen in rat and rabbit eggs and the fluctuation of its concentration during development have been reported (ISHIDA 1954, 1963), histochemical demonstration of enzymes related to glycogen metabolism has not yet been published. Studies of glycogen metabolism are generally ...