TY - JOUR AU - Steenken, WilliamJr. AB - BIOLOGICAL STUDIES OF SAPROPHYTIC ACID-FAST ORGANISMS I. DISSOCIATION OF MYCOBACTERIUM PHLEI S. A. PETROFF AND WILLIAM STEENKEN, JR. TRUDEAU, NEW YORK Our recent study on the variability and dissociation of the tubercle bacillus! where numbers of variants were isolated and studied suggested the possibility of similar variation existing among the saprophytic members of the acid-fast organisms. The wide distribution of these organisms in nature is well recognized but their relationship and part played in the evolution of the tubercle bacillus is yet unknown. After the discovery of the tubercle bacillus by Robert Koch in 1882, and in the following 20 years, a number of bacilli presenting similar staining reĀ­ actions and other biological characteristics similar to the tubercle bacillus were discovered. Such bacilli have a comparatively wide distribution throughout nature, as they have been isolated from various species of grass, from butter and milk, from dung and from the surface of animal bodies. Morphologically they resemble closely the tubercle bacillus though many are shorter and plumper, some of them under certain conditions show filamentous and branching forms. Very often, when they are injected into laboratory animals, they produce granulation tissues, or nodules which often closely resemble tubercle, differing perhaps TI - Biological Studies of Saprophytic Acid-Fast Organisms JO - The Journal of Infectious Diseases DO - 10.1093/infdis/56.3.277 DA - 1935-05-01 UR - https://www.deepdyve.com/lp/oxford-university-press/biological-studies-of-saprophytic-acid-fast-organisms-Cc0TydQ15M SP - 277 EP - 287 VL - 56 IS - 3 DP - DeepDyve ER -