2.1 The Properties of Light 2.2 Peering Into the Invisible World 2.3 Instruments of Microscopy 2.4 Staining Microscopic Specimens

Learning Objectives By the end of this section, you will be able to: In their natural state, most of the cells and microorganisms that we observe under the microscope lack color and contrast. This makes it difficult, if not impossible,…

Learning Objectives By the end of this section, you will be able to: The early pioneers of microscopy opened a window into the invisible world of microorganisms. But microscopy continued to advance in the centuries that followed. In 1830, Joseph…

Learning Objectives By the end of this section, you will be able to: Some of the fundamental characteristics and functions of microscopes can be understood in the context of the history of their use. Italian scholar Girolamo Fracastoro is regarded as the…

Learning Objectives By the end of this section, you will be able to: Clinical Focus Part 1 Cindy, a 17-year-old counselor at a summer sports camp, scraped her knee playing basketball 2 weeks ago. At the time, she thought it…

Figure 2.1 Different types of microscopy are used to visualize different structures. Brightfield microscopy (left) renders a darker image on a lighter background, producing a clear image of these Bacillus anthracis cells in cerebrospinal fluid (the rod-shaped bacterial cells are surrounded by larger white…