By Eugene Toy, Donald Briscoe, Cynthia Debord, Audrey Wanger, Gilbert Castro, James Kettering
Publish yr note: First released may perhaps fifth 2005
LEARN MICROBIOLOGY within the CONTEXT OF REAL-LIFE sufferers and get ready FOR THE USMLE STEP 1
Experience with medical situations is vital to excelling at the USMLE Step 1 and shelf tests, and eventually to offering sufferers with efficient scientific care. Case documents: Microbiology offers fifty four true-to-life situations that illustrate crucial ideas during this box. every one case comprises an easy-tounderstand dialogue correlated to crucial uncomplicated technology strategies, definitions of keyword phrases, microbiology pearls, and USMLE-style assessment questions.
With Case documents, you'll study rather than memorize.
• study from fifty four high-yield situations, each one with board-style questions and key-point pearls
• grasp complicated thoughts via transparent and concise discussions
• perform with evaluation inquiries to make stronger learning
• Polish your method of scientific problem-solving
• ideal for scientific and dental scholars getting ready for direction tests and the forums
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Additional resources for Case Files Microbiology (3rd Edition) (Lange Case Files)
The bacteria cells can be spherical, pleiomorphic (similar to Corynebacterium diphtheria), or filamentous. Cells stain as gram-negative. 0 μm. Cells appear almost filamentous following culture on solid media, while they appear spherical in broth media. Cells become almost completely spherical after growing for 2–3 days in stale broth media, but the coccoid morphology can be easily altered. R. dentocariose does not produce spores or a capsule. They are nonmotile and are not acid tolerant. 10(B) and (C).
Individual cells usually have rounded ends. Cells stain gram-positive. (C) Colonies of L. casei (BHI blood agar). (D) Colonies of L. casei (Rogosa agar). (E) Cheese colonies of L. casei (stereomicroscope). 3 Lactobacillus fermentum L. 9(A)–(C)). Commonly used media to culture this species are BHI blood agar and Rogosa agar, where the latter is a selective medium. 9(D)–(F). 9 (A) Lactobacillus fermentum cell (Gram stain). (B) L. fermentum cell (SEM). (C) L. fermentum cell (SEM). The L. 9 μm in diameter, but its length can vary quite significantly.
Cells become almost completely spherical after growing for 2–3 days in stale broth media, but the coccoid morphology can be easily altered. R. dentocariose does not produce spores or a capsule. They are nonmotile and are not acid tolerant. 10(B) and (C). These bacteria are facultative anaerobes. They grow well in an aerobic environment, although primary cultures require incubation under anaerobic conditions (80% N2, 10% H2, 10% CO2). The optimal growth temperature is 35–37 °C. When cultured for 18–24 h under anaerobic conditions, young colonies are always filamentous and appear as spider-like colonies.