. Pharmaceutical bacteriology. Bacteriology; Disinfection and disinfectants. 132 PHARMACEUTICAL BACTERIOLOGY ally there are two or more smaller vacuoles, sometimes as many as twenty or thirty, again there may be one comparatively large vacuole and two or more smaller vacuoles. 5. There is a striking similarity between the younger sphaerocytes as above described and the resting or encysted forms of amebae. In fact so striking is this resemblance that it was at first supposed that they might be stages in the life history of certain amebas, but further obser- vation proved this supposition errone
. Pharmaceutical bacteriology. Bacteriology; Disinfection and disinfectants. 132 PHARMACEUTICAL BACTERIOLOGY ally there are two or more smaller vacuoles, sometimes as many as twenty or thirty, again there may be one comparatively large vacuole and two or more smaller vacuoles. 5. There is a striking similarity between the younger sphaerocytes as above described and the resting or encysted forms of amebae. In fact so striking is this resemblance that it was at first supposed that they might be stages in the life history of certain amebas, but further obser- vation proved this supposition erroneous. Sphaerocytes disappear with the advent of decomposition whereas ameba2 thrive in the presence of decaying substances. 6. The colorless younger sphaerocytes are generally without nuclei; at least none could be detected by the usual staining Fig. 46.—Amebo-sphaerocytes of the green tomato. A, actively motile forms with chlorophyll granules. B, actively motile forms without chlorophyll granules. C encysted amebo-sphaerocytes with chlorophyll granules. D, encysted forms without chlorophyll granules. The sphaerocytes are very abundant in the mucilaginous layer enclosing the seeds of the tomato (Schleimhiille), where they occur in all stages of development, ranging in size from the very limits of microscopic iden- tification (about one micron in diameter) to maturei mucilaginous tissue cells (275 microns in diameter). They originate in the cell plasm and are soon extruded from the cell plasm whereupon they continue an independent existence within or without the mother cell. The extra-cellular forms no doubt make their escape from the cell by way of the pores of the cell-wall. Some may be derived from intercellular plasmic threads. Occasionally groups or clusters of sphaerocytic pulp cells occur in cer- tain areas of the tomato pulp, more especially near the epidermal layers. It would appear that under ordinary or usual conditions the sphaerocytes. Please note that th
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