In a study, Şpraque-Dawley rats were infected with P. multocida type B2 and various characteristics of the Peyer' patches were compared with control groups that were not infected. The rats were euthanised on day 14 post inoculation and various evaluations were performed on each portion of intestines. Results showed no significant differences in the length of Peyer's patches between infected and the control groups. Answer the following questions on the infection and the characteristics shown in Figure 1A, Figure 1B and Figure ic. PEYER'SPATCHI SCOUNT IN GROSS EIXAMINATION ECTE NORAL Figure 1A: Total number of Peyer's patches in control and infected rats. Peyer's Patches Between Intestinal Section aControl Oinfected 2a076 n4 SIDAVASKAM wer's Patche

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Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.