抄録
An actinomycete, isolated from soil, was selected for investigation on the basis of its ability to produce an agent inhibiting WALKER 256 tumors in rats. This agent is a new antibiotic that has been designated "kundrymycin". Increased kundrymycin yield was obtained with media development and strain selection. Improvement was based on results obtained in in vivo tumor inhibition tests. Antibiotic yield in an 800-gallon (3, 000-liter) tank fermentation was 4.2mg/ml.
