BIOL302 Lecture Notes - Lecture 4: Blood Film, Giemsa Stain, Eosinophil
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13 Feb 2018
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In this lab we will look at the circulatory system. While blood is often considered to be a distinct tissue it is properly classified as a connective tissue. Blood is composed of cells (red blood cells, leuckocytes, and platelets) as well as a variety of soluble matrix fibers and ground substance (plasma). In this lab you will identify the various cellular elements in a peripheral blood smear: erythrocytes (red blood cells = rbcs), leukocytes (white blood cells), and platelets. Try to identify the different types of leukocytes (lymphocytes, neutrophils, eosinophils, basophils, and monocytes). Learn the function of each and relate its function to the structures you can see. Erythrocytes are very common in tissue sections and provide a useful ruler for estimating the size of structures. Erythrocytes average about 8 m in diameter, and unlike leukocytes do not vary much in size. Note the variability in the size and nuclear shape of monocytes and lymphocytes.
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