S M D'Ambrosio

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The enhancement of tumor development following acute stress has been demonstrated in some animal studies. This study was designed to explore mechanisms that would account in part for the relationship between stress and tumor development at the level of DNA repair, using a rat model. Forty-four rats were given the carcinogen dimethylnitrosamine in their(More)
Early passage normal human fetal kidney epithelial cells were inoculated on top of a confluent monolayer of X-ray lethally irradiated human fibroblasts to determine the colony-forming ability of these epithelial cells. The results indicate that the great majority of the epithelial cells did not have the clonogenic ability on the fibroblast cell mat,(More)
The functional capacity of a cell, tissue, organ, or organism is dependent upon its ability to maintain the stability of its unit components. The higher the differentiated state of the system, the greater the amount of stability required to maintain that state as a function of time. Stability can be achieved via either redundancy or repair. Redundancy while(More)
Kinetic analyses of the irreversible inhibition of L-tyrosine and L-phenylalanine transport in Bacillus subtilis by phenylalanine chloromethyl ketone revealed that the inhibition was due to an affinity labeling process. Phenylalanine chloromethyl ketone is a competetive inhibitor of L-tyrosine and L-phenylalanine transport. The K, values for irreversible(More)
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