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Science Image Library: General Biology Micrographs
The SPO Science Image Library is a continuously growing collection of copyright- free science photographs. If you use one of our free, low-res images, we just ask that you give us credit and provide a link to the SPO website (scienceprofonline.com). To save a photo to your computer, right click on it and select "Save". Click on image to enlarge.
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The Microbiology Image Library is the largest photo collection on the SPO site. To help you more easily find what you are looking for, select the "see more" link of the sub-topic below that corresponds to your interests.
Science Image Library
General Biology Microscopic Specimen Images
from Science Prof Online
1. Newsprint of letter "e" @ 40xTM; 2. Newsprint letter "e" @ 100xTM; 3. Newsprint letter "e" @ 400xTM
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You have free access to a large collection of materials used in a college-level introductory microbiology course. The Virtual Microbiology Classroom provides a wide range of free educational resources including PowerPoint Lectures, Study Guides, Review Questions and Practice Test Questions.
1. Human cheek epithelial cells stained with methylene blue @100xTM; 2. Human cheek epithelial cells stained with methylene blue @400xTM; Mixed slide of protozoa 100xTM; Trypanosoma, cause of African sleeping sickness @400x TM; Cheek cell and oral bacteria @100xTM.
1. Elodea plant cells @100xTM; 2. Elodea plant cells, small cell layer @400xTM; 3. Elodea plant cells, big cell layer @400xTM; 4. Pumpkin stem @40xTM; 5. Tilia stem @40xTM; 6. Onion epidermal plant cells @100xTM; 7. Onion epidermal plant cells @400xTM; 8 & 9. Onion epidermal plant cells stained with iodine @400xTM; Volvox algae @100xTM.
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You have free access to a large collection of materials used in a college-level introductory Cell Biology Course. The Virtual Cell Biology Classroom provides a wide range of free educational resources including Power Point Lectures, Study Guides, Review Questions and Practice Test Questions.
Newsprint Letter "e" (Click on image to enlarge.)
Animal Cells Viewed with Microscope (Click on image to enlarge. More Eukaryotes.)
Plant & Algae Cells (Click on image to enlarge. More Plants.)
Page last update 4/2013
How to Make a Wet Mount Microscope Slide (Click image to enlarge.)
How to Make a Wet Mount Slide: 1. Place drop of water or physiological saline on slide; 2. Place specimen in liquid (onion skin pictured); 3 & 4. Use stain if cells are colorless (iodine pictured); 5. Place cover slip on slide. Reduce number of air bubbles trapped under cover slip by placing one edge of the cover slip on the slide and then letting the rest of the cover slip drop onto the slide.
Multi-cellular Microscopic Animals (Click on image to enlarge. More Eukaryotes.)
1. Deer tick Ixoides sp @40x; Hydra budding @ 40xTM; Obelia @ 40x; Trichinella in muscle @100xTM.
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