. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. 44 Structure and Classification of Micro-organisms occasionally appear as contaminations upon solid culture-media. About 130 species are known. Of these, Mucor corymbifer, Mucor rhizopodiformis, Mucor ramosus, Mucor pusillus, Mucor septatus, and Mucor conoides are said by Plant* to be pathogenic when introduced into laboratory animals. Mucor corymbifer has been known to produce inflammation of the external auditory meatus in General mucor mycosis i
. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. 44 Structure and Classification of Micro-organisms occasionally appear as contaminations upon solid culture-media. About 130 species are known. Of these, Mucor corymbifer, Mucor rhizopodiformis, Mucor ramosus, Mucor pusillus, Mucor septatus, and Mucor conoides are said by Plant* to be pathogenic when introduced into laboratory animals. Mucor corymbifer has been known to produce inflammation of the external auditory meatus in General mucor mycosis in man has also been observed by Paltauft to result from the presence of the same organism. 4. Aspergillus and Eurotium.—The organisms of this genus are included among the Ascomycetes. They are common organisms of the air and frequent contaminations of solid culture-media. To secure them an agar-agar plate can be exposed to the atmosphere of the laboratory for a short time, then covered and stood aside for a. Fig. 13.—Mucor mucedo. Single-celled mycelium with three hyphae and one developed sporangium (After Kny, from Tavel). day or two, when tangled mycelial growths with rapidly spreading hyphae will usually be discovered. The recognition is easily made when the sporangia appear. These are well shown in the accom- panying illustration. The mycelium is divided into many cells. Reproduction is asexual and takes place through conidia spores. The fruit hyphse, which are aerial, terminate in rounded extremities which are known as columella, from which many radiating sterig- mata arise, each terminating in a series of rounded spores. A sexual form of reproduction also takes place through the production of ascospores. Many species are known, only a few of which are pathogenic. Aspergillus malignum has been found by von Lindt in the auditory meatus of man. * Kolle and Wassermann, "Die Pathogenen Mikroorganismen," 1903, i, 552. t Huckel-Losch in Flugge, "Die Mikroorgan
Size: 1793px × 1393px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbacteri, bookyear1919
