By R. W. Fairbrother (Auth.)
Read Online or Download A Text-Book of Bacteriology PDF
Best medicine books
Anatomy for Dental scholars, Fourth version, demonstrates and explains all of the anatomy wanted for a contemporary dentistry undergraduate path. this article covers developmental anatomy, the thorax, the vital fearful procedure, and the pinnacle and neck with an emphasis at the functional software of anatomical wisdom.
Nordwest-Krankenhaus Sanderbusch, Sande, Germany. Pocket atlas bargains top quality colour illustrations and distinctive details at the analysis of signs and indicators of neurologic disorder. Emphasizes stipulations most often noticeable in medical perform. additionally comprises the basics of the anatomic constitution of the anxious method.
This quantity is a compendium of state-of-the-art molecular equipment for the winning transplantation of hematopoietic stem cells. The individuals are world-renown leaders within the box. They describe promising instruments for stem telephone transplant learn versions, equivalent to in vivo bioluminescence imaging. They speak about HLA typing, PCR-SSP typing, and HLA antigens.
- First Aid for the USMLE Step 1 2013 (First Aid USMLE)
- Stem Cell and Gene-Based Therapy: Frontiers in Regenerative Medicine
- Handbook of Medical Imaging: Processing and Analysis Management
- First Exposure to Internal Medicine: Ambulatory Medicine (First Exposure Series)
- Case Files Critical Care (LANGE Case Files)
- Diagnosis: A Symptom-Based Approach in Internal Medicine
Additional resources for A Text-Book of Bacteriology
When only one species of bacterium is present it is termed a pure culture. The inoculation of a second medium from a previous culture is termed a subculture. I t is important t h a t all cultures should be carefully labelled and the source of the material and date clearly indicated. The Incubation of Cultures. Inoculated media are placed in a thermostat at a temperature suitable for their growth. Thermostats or incubators working at 37° C. are necessary for the study of the parasitic bacteria. The incubators, water-jacketed and either gas or electrically heated, are regulated by capsules.
Pigment Production. Many bacteria are able to form a characteristic pigment ; these are termed chromogenic bacteria. The type of pigment varies considerably with different species and may be yellow, red, violet, green, etc. , Ps. , it is extracellular. The production of pigment is dependent to a considerable degree on environmental factors. Aerobic conditions are usually essential, but in the case of Sp. rubrum pigment-formation is most marked under reduced oxygen pressure. Pigment production is facilitated by growth at relatively low temperatures ; in many cases it is formed more readily on incubation at between 20°-30° C.
1. Viable Count. The number of living bacteria in a suspension is determined by plating a standard amount of serial decimal dilutions of the suspension. Dilutions in saline up to 1/107 or 1/108 of the original suspension are made ; a fresh pipette must be used for each bacterial transfer. c. of each dilution is placed in a Petri dish, melted agar, cooled to 50°-55° C, is added and the contents of the plate mixed by gentle agitation. After incubation at the optimum temperature for 24-48 hours, the total number of colonies on plates containing a countable number is obtained and an average made after the dilutions have been adjusted.
A Text-Book of Bacteriology by R. W. Fairbrother (Auth.)