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    Compound Light Microscope

    Differential Staining of Bacteria
    Laboratory Exercise

    Virtual Microbiology Classroom of Science Prof Online


    The lab PowerPoints used in the Virtual Microbiology Classroom are designed to help introduce students to each lab project.

    ​​​Printing: The best way for students to print out the PowerPoint Show is to download the PDF version. Select Print, and, when the Print screen comes up, go to the Print Handling options. Under Page Scaling, select "Multiple pages per sheet", Under Pages per sheet, select "2". That uses up less paper, placing two slides on each page.

    The Lab Exercise Instructions provide a thorough explanation of the lab topic, as well as detailed directions on how to complete the lab exercise. The Lab Report Template is what the students use to develop the lab report for this project.

    Page last updated: 6/2015
    : This is an extremely useful tutorial that shows, step-by-step, the Gram-staining procedure and the appearance of Gram+ and Gram- bacterial cells.
    • : Another good video of the staining procedure.
    • : Instructions, illustration and table indicating color of cells at each step.
    •  animation and quiz from McGraw-Hill
    •  interactive diagram from Cells Alive website.

    Differential Staining of Bacterial Cells

    This is the main page for the Introduction Differential Staining Topic of a 15-week introductory college microbiology class. 

    How to Prepare a Bacterial Smear for Gram Staining
    How to Prepare a Bacterial Smear for Acid-fast 
    (Ziehl-Neelsen) Staining
    How to Prepare a Bacterial Smear for Endospore Staining
    How to Do a Gram Stain
    How to Do an Acid-fast 
    Ziehl-Neelsen Stain

    How to Do an Endospore Stain
    Tutorial on Compound Light Microscope Parts & Operation

    Photographic guides to differential stains 
    now available!
    1. Gram
    2. Acid-fast
    3. Endopsore

    Virtual Microbiology

    The Virtual Microbiology Classroom provides a wide range of free, classroom-tested, educational resources including PowerPoint Lectures, Study Guides, Review & Practice Test Questions.

    Prokaryotic Cell, Mariana Ruiz
    Differential Staining of Bacteria Lab Images
    The Microscopy Lab materials include:
    • Laboratory Exercise
    • Laboratory PowerPoint
    • Required readings 
    • Videos & images of lab procedures
    • Additional links that support the lab materials
    NOTE:​ ​Students must review all material in categories highlighted with
    red titles  PRIOR TO ATTENDING LAB in order to be prepared to participate. ​​​
    , Microbiology & Immunology On-line

    Our Favorite New Microbio APP!
     Cool infectious disease game:
    Plague Inc.  
    Do you中国福利彩票下载安装αpp have what it takes to be a successful pathogen?