. Protozoo?logy. Protozoa; Protozoa, Pathogenic. FERTILIZATION BY EXOGAMY Fig. 157. Conjugation of Paramecium aurelia. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Calkins, Gary N. (Gary Nathan), b. 1869. New York and Philadelphia, Lea & Febiger

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