. The anatomical record. Anatomy; Anatomy. CHOROID PLEXUS 243 impossible to observe in this stain the method of nuclear di- vision. Arnold saw no changes in the form and position of mast cells within a period of from twenty-four to thirty-six hours. Kanthack and Hardy held that the 'Histiogenen' mast cells are stationary. While Lowenthal, Maximow, Pappenheim and Weidenrich ascribed to them an amoeboid movement. Maximow saw alterations in the form of mast cells in inflam- matory tissue. In numerous other cells, processes were observed to extend out from the cell bodies and to work themselves be
. The anatomical record. Anatomy; Anatomy. CHOROID PLEXUS 243 impossible to observe in this stain the method of nuclear di- vision. Arnold saw no changes in the form and position of mast cells within a period of from twenty-four to thirty-six hours. Kanthack and Hardy held that the 'Histiogenen' mast cells are stationary. While Lowenthal, Maximow, Pappenheim and Weidenrich ascribed to them an amoeboid movement. Maximow saw alterations in the form of mast cells in inflam- matory tissue. In numerous other cells, processes were observed to extend out from the cell bodies and to work themselves between the con-. Fig. 10 Outline of changes observed in a living interstitial granule cell— mast cell—during division. The time required was one hour and fifty-five min- utes, a, ; />, , c, , d. c. Drawing, oc. 1-, obj. mm., oil immersion, B. & L. Tech.: Fresh choroid tissue mounted in serum, vital staining with neutral red. electric incubator for micro.'Jcopic stage, temperature, °. nective elements. Some of the processes developed within one-half hour. The development of the processes was charac- terized, as a rule, by a continuous out-flowing of granules from the cell body. Granules were seen, however, to develop in the processes some distance from other granules, thus apparently having their origin directly from homogeneous cytoplasm. In attempting to determine the origin of these granules, I have come to no conclusion. In many instances the granules ap- peared to di^'ide. However, as noted, granules seemed to make their appearance directly from homogeneous cytoplasm. Many observers hold that the granules are derived from the THK .\N-ATOMIC.\L RECORD, VOL. 12, SO. 2. 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 Bardeen, Charles
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1906
