A new antitumor antibiotic, FR-900482. I. Taxonomic studies on the producing strain: A new species of the genus Streptomyces.

A new antitumor antibiotic, FR-900482. I. Taxonomic studies on the producing strain: A new species of the genus Streptomyces. A new antitumor antibiotic, FR-66979. FR-900137, a new antibiotic. I. Taxonomy and fermentation of the organism, and isolation and characterization of the antibiotic. FR-900137, a new antibiotic. I. Taxonomy and fermentation of the organism, and isolation and characterization of the antibiotic. A new antitumor antibiotic, FR900840. II. Structural elucidation of FR900840. FR-900520 and FR-900523, novel immunosuppressants isolated from a Streptomyces. I. Taxonomy of the producing strain. FR-900520 and FR-900523, novel immunosuppressants isolated from a Streptomyces. I. Taxonomy of the producing strain. FR-900148, a new antibiotic. I. Taxonomy, fermentation, isolation and characterization. Sandramycin, a novel antitumor antibiotic produced by a Nocardioides sp. Production, isolation, characterization and biological properties. A novel antifungal antibiotic, FR-900848. I. Production, isolation, physico-chemical and biological properties.