2. Match each eye structure with its correct description. a. structure filled with aqueous humor 1. outer fibrous layer b. structure continuous with the optic nerve 2. middle vascular layer c. attachment site for extrinsic eye muscles 3. inner neural layer d. retina 4. anterior cavity e. iris, ciliary body, and choroid 5. posterior cavity f. structure that houses the photoreceptors g. structure filled with vitreous humor h. sclera and cornea
Microscopic examination
The analysis of minute organisms, cellular organization of any biological structure, and composition of body fluids with the help of a microscope is known as microscopic examination. The magnification of specimens or samples under study helps in attaining a clearer picture of it.
Gram Staining
Named after Hans Christian Gram, a Danish bacteriologist, Gram stain is one of the most powerful staining techniques within microbiology. This technique was introduced in 1882 to identify pneumonia-causing organisms. The Gram staining technique uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.
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