An Atlas of Bacteriology; Containing One Hundred and Eleven Original Photomicrographs with Explanatory Text

An Atlas of Bacteriology; Containing One Hundred and Eleven Original Photomicrographs with Explanatory Text

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ...from such purulent material can be obtained on agar (or, better, on glycerine agar), bouillon, blood serum, and potato at 37 C. On agar it forms a rather thick and decidedly glutinous layer; in bouillon a general, rather slight turbidity, and on potato a thick, brown, viscid, honey-like growth, which is highly characteristic. Preparations from such cultures (Fig. 41) show bacilli of very varying length, ranging from coccoid forms to fairly long filaments. The cultures are very polymorphic and prone to the production of involution forms. The beading and polar staining occur in the cultures. The bacilli from cultures do not stain very readily, owing, it would seem, to the protective slimy envelope which gives to the growth the gelatinous character which has been mentioned. Susceptible animals--e.g., guinea-pigs--succumb to subcutaneous and intra-peritoneal inoculations; the internal organs are studded with the characteristic lesions. In the male guinea-pig the testicles are peculiarly liable to suffer after intra-peritoneal injection, a severe epididymitis and orchitis being set up. This reaction in the animal is very useful in the diagnosis of glanders in man. A section of testicle from such an infected animal is represented in Fig. 42. The lesion figured is a very early one, and the alterations in the tissue correspondingly slight, but a group of bacilli is seen. The organisms are often met with in the cells. A substance, "mallein," corresponding both in origin and in specific action to tuberculin, has been obtained. It is doubtful whether susceptible animals have been successfully immunised. Fig. 41.--Bacillus Mallei. Cover Glass Preparation, Culture on Potato, 48 hours' growth, Carbol-Fuchsine, apochromat, Projection ocular 6. X 1000....show more

Product details

  • Paperback | 26 pages
  • 189 x 246 x 1mm | 68g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236542053
  • 9781236542052