Waksman na ndị ọrụ ụlọ nyocha ya chọpụtara ọtụtụ ọgwụ nje, gụnyere actinomycin, clavacin, streptothricin, streptomycin, grisein, neomycin, fradicin, candicidin, na candidin. N'ime ndị a, streptomycin na neomycin chọtara ngwa ngwa na ọgwụgwọ nke ọtụtụ ọrịa na-efe efe. Streptomycin bụ ọgwụ nje nje mbụ maka ụkwara nta (TB). Na 1952 Waksman bụ onye natara Nobel Prize na Physiology ma ọ bụ Medicine na "nchọpụta ya nke streptomycin, ọgwụ nje mbụ megide ụkwara nta". Waksman na ndị ọrụ ụlọ nyocha ya chọpụtara ọtụtụ ọgwụ nje, gụnyere actinomycin, clavacin, streptothricin, streptomycin, grisein, neomycin, fradicin, candicidin, na candidin.
Afọ 1943