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The random and directed motility of human leukocytes was studied in vitro. Motility was found not to be dependent upon glucose in the medium. 2-Deoxyglucose was found to inhibit all motility completely. Dinitrophenol had a minor suppressive effect on both random and directed motility. Puromycin at 10 −3 M and actinomycin D at 10 μg/ml had a disproportionately great inhibitory effect on directed motility, when compared with minor inhibitory effects on random motility. Actinomycin D at 20 μg/ml and trypsin at 0.1 mg/ml were found to inhibit both types of motility almost completely. Segregation of starch from the field of leukocyte motility was found to abolish its chemotactic effect. Restoration of some chemotactic influence was seen if both starch and leukocytes were present in the segregated area.
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Bruce M. Carruthers (1967) studied this question.
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