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The specific activities of acetyl- and butyrylcholinesterase and carboxylesterase were assayed in the digestive gland and in nervous and muscle tissues of the crayfish Procambarus clarkii. Since(More)
We have previously described () that Escherichia coli maintains a balanced supply of deoxyribonucleotides by a regulatory mechanism that up-regulates the levels of ribonucleotide reductase with the(More)