Most searched books


New PDF release: A Text-Book of Bacteriology

By R. W. Fairbrother (Auth.)

Show description

Read Online or Download A Text-Book of Bacteriology PDF

Similar medicine books

Combined Scintigraphic and Radiographic Diagnosis of Bone - download pdf or read online

Sung Ae basic sanatorium, Seoul, Korea. Emphasizes the price of pinhole scintigraphy in diagnosing bone and joint illnesses. This moment version covers new pinhole scintigraphic recommendations: dual-head pinhole scintigraphy and pinhole SPECT. For radiologists, nuclear physicians, orthopedic surgeons and different experts.

Martin Dufva PhD MSc (auth.), Martin Dufva (eds.)'s DNA Microarrays for Biomedical Research: Methods and PDF

DNA microarray know-how has revolutionized examine some time past decade. at the start an program for mRNA expression stories, the expertise now has unfold to different purposes reminiscent of comparative genomic hybridization, SNP and mutation research. In DNA Microarrays for Biomedical learn: equipment and Protocols, specialists discover those now customary purposes, addressing probe layout suggestions, fabrication concerns and delivering functional examples of precise equipment for new release of top of the range DNA microarray info.

Kurzlehrbuch Histologie - download pdf or read online

Stressfrei und sicher durch die Prüfung - prüfungsrelevantes Wissen auf den Punkt gebracht:- Zytologie, Allgemeine Gewebelehre- Spezielle Histologie der Organe- Orientiert am aktuellen Gegenstandskatalog- farbige Schemazeichnungen und mikroskopische Aufnahmen- eindrückliche Fallbeispiele als Kapiteleinstieg- klinische Bezüge zum besseren Verständnis der GrundlagenDas gesamte prüfungsrelevante Wissen für das Fach Histologie und Zytologie für Prüfungen im Semester und für das Physikum.

Additional resources for A Text-Book of Bacteriology

Sample text

All, however, multiply better in the dark than in the light ; direct sunlight generally exercises a marked bactericidal action, which is due mainly to the ultra-violet rays. Respiration is exhibited by all bacteria, oxygen exchange being an essential feature of bacterial metabolism. Great variability in oxygen requirement is shown by the different species. Many obtain their oxygen from the air and grow best under ordinary atmospheric conditions ; these are termed aerobes. Other species, however, are unable to reproduce in the presence of molecular 0 2 , any oxygen required being obtained by splitting up the complex proteins and carbohydrates in the medium ; these are termed anaerobes.

I t is important t h a t the surface of the medium should be dry, otherwise growth tends to be confluent. A spreader, made by bending a piece of heated glass rod, can be used instead of the loop, but the results are not so satisfactory when many bacteria are present in the material under examination. When, however, it is suspected t h a t the material contains a large number of organisms, it is advisable either to inoculate FIG. 8. several plates from one drop or to make serial dilutions which can be cultivated separately.

The form most commonly employed is a sloped tube or slope. c. of melted agar are placed in a test-tube and allowed to cool in a slanted position. I n this way a large surface area is obtained from a relatively small quantity of medium. c. of the melted medium are allowed to cool to 5°-10° C. F I G . —Platinum loop and needle. above the setting temperature and are then poured into a Petri dish. Condensation of steam on to the medium or the lid is avoided by allowing the medium to set at 37° C. with the lid not completely covering the medium, but resting on one side of the dish.

Download PDF sample

Rated 4.94 of 5 – based on 3 votes

Comments are closed.