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. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative. THE BLOOD. 159 graded ?) non-nucleated form mostly derived directly from the former; that in the first instance the blood-vessels and blood. Fig. 144. (3(3(3(D Fig. 145. FiQ. 146. â ' /""â»\ Sum, 7 Fig. 147. Fig. 148. Fig. 144.âCell elements of red marrow, a, large grannlar marrow cells; d, smaller, more vesicnlar cells; c, free nuclei, or small lymphoid cells, some of which may be even surrounded with a delicate rim of protoplasm; cf, nucleated red c
. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative. THE BLOOD. 159 graded ?) non-nucleated form mostly derived directly from the former; that in the first instance the blood-vessels and blood. Fig. 144. (3(3(3(D Fig. 145. FiQ. 146. â ' /""â»\ Sum, 7 Fig. 147. Fig. 148. Fig. 144.âCell elements of red marrow, a, large grannlar marrow cells; d, smaller, more vesicnlar cells; c, free nuclei, or small lymphoid cells, some of which may be even surrounded with a delicate rim of protoplasm; cf, nucleated red corpuscles of the bone marrow. Fig. 146.âNucleated red cells of marrow, illustrating mode of development into the ordinary non-nucleated red corpuscles, a, common forma of the colored nucleated cells of red marrow; 6,1,2,3, gradual disappearance of the nucleus; c, large non- nucleated red corpuscle resembling 2 and 3 of ft in all respects save in the absence ' of any trace of nucleus. Fig. 146.âNucleated red corpuscles, illustrating the migration of the nucleus from the cell, a process not unfrequently seen in the red marrow. Flo. 147.âBlood of human embryo of four months, a, 1,2,3,4, nucleated red corpus- cles. In 4 the same granular disintegrated appearance of the nucleus as is noted in marrow cells. 6,1, microcyte; 2, megalocyte; 3, ordinary red corpuscle. Fig. 148.âFrom spleen. 1, blood-plaques, colorless and varying a little in size; 2, two microcytes of a deep-red color; 3, two ordinary red corpuscles; 4, a solid, translu- , cent, lymphoid cell or free nucleus. (Figs. 144-148 after Osier.) arise simultaneously in the mesoblastic embryonic tissue ; that such an organ may exist after birth, either normally in some mammals or under unusual functional need ; that the red mar- row is the chief birthplace of colored cells in adult life ; that. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - col
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