[Epoxy ring scission in the oleandomycin molecule during aging]. / O raskrytii époksidnogo kol'tsa v molekule oleandomitsina v protsesse stareniia.

Opening of the epoxide ring in the molecule of oleandomycin phosphate in the process of its aging was shown to be possible by the data of the analysis. Certain correlation between the "glycol" content and drug activity was detected.

[Characteristics of the range of mutations in nystatin resistance induced in yeasts by 6-N-hydroxylaminopurine]. / Osobennosti spektra mutatsii nistatinustoichivosti, indutsirovannykh u drozhzhei 6-N-gidroksilaminopurinom.

A simple procedure for induction of nistatin-resistant mutants in yeasts under the action of 6-N-hydroxylaminopurine (HAP) is proposed. Some differences between the spectra of mutations induced by HAP and UV-light are observed: HAP induces dominant and double recessive mutants more frequently.