. Electron microscopy; proceedings of the Stockholm Conference, September, 1956 . Fig. 5. Electron micrograph of ihin section through the "neck" illustrating the key mechanism. (After Agar and DoLiglas, by courtesy of the J. Bacleriol.) Magnification X 21,000. the first stage in the formation of the internal rim and in ih) the rims are nearly completely formed be- fore the transverse membranes, in (c) the interlocking scars are shown in section. These sections arc easily deduced by studying the electron micrograph in figure 1. id) shows the last stage in the process as proposed by Ba
. Electron microscopy; proceedings of the Stockholm Conference, September, 1956 . Fig. 5. Electron micrograph of ihin section through the "neck" illustrating the key mechanism. (After Agar and DoLiglas, by courtesy of the J. Bacleriol.) Magnification X 21,000. the first stage in the formation of the internal rim and in ih) the rims are nearly completely formed be- fore the transverse membranes, in (c) the interlocking scars are shown in section. These sections arc easily deduced by studying the electron micrograph in figure 1. id) shows the last stage in the process as proposed by Barton (2) in which the birth scar on the daughter cell grows outwards, thus releasing the key mechanism. An independant investigation by Agar and Doug- las (I), who examined sections of yeast concurrently with the present work, showed that the above con- clusions are in agreement with information provided by sections. The key mechanism is well illustrated in the micrograph of the section shown in figure 5. This work is more fully described elsewhere by Bradley (4). in addition to the study of yeast cells, the carbon replica has been applied to the study of the surface structure of some bacillus spores. These are e\en
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