Download An Introduction to the Principles of Disease by J. B. Walter PDF

By J. B. Walter

New version of this easy-to-read textual content has been up-to-date and revised to hide new details on clinical genetics, immune reaction, and contains the most recent findings in AIDS. Acquaints the reader with primary elements of area of expertise parts together with bacteriology, biochemistry, hematology, radiology, and surgical procedure. sincerely reproduced photographs, micrographs, and line drawings make clear techniques offered within the textual content

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Following division the daughter cells may enter the second resting stage (Gj) before recommencing DNA synthesis. Other daughter cells can pass into a resting phase (G0) and after a period can either reenter the cell cycle or become differentiated and cease to be capable of mitosis. Prophase Metaphase Anaphase Telophase Differentiation one to each pole of the cell, and microtubules develop in association with them. Each centriole looks like an aster, or star (Fig. 2-23). The nucleoli and the nuclear membrane disappear next, and the cell enters into metaphase.

This fluid constitutes about one third of the total water and lies between the blood vessels and the cells. It contains many electrolytes in a concentration similar to that of plasma as well as small uncharged solute materials such as oxygen, carbon dioxide, urea, and glucose, which are being conveyed either for cellular metabolism or for excretion. In addition, the ground substance contains the following: THE INTERCELLULAR SPACE The Ground Substance 34 General Pathology Figure 2-19. Macrophages.

During the next phase, anaphase, each set of chromatids, now again called chromosomes, is pulled by the microtubules of the spindle to either pole of the cell. The final stage (telophase) involves division of the cytoplasm of the cell, and reconstitution of the nuclear membrane of each daughter cell. It can readily be understood how during mitosis each chromosome reduplicates itself exactly, and the two daughter cells contain an identical quota of nuclear material. Each DNA molecule is also reduplicated exactly.

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