Electron Microscope Studies on Structure of Mitotic Figure.

Electron Microscope Studies on the Mitotic Figure

“…In the present electron microscopy, the fibrillar structure of the chromosomal fibers could be confirmed, just as it was suggested by Beams et al (1950), Wada (1950), Sedar and Wilson (1951) to the effect that the chromosomal fiber consists of several fine fibrils, but that no continuous fibers which connected the two poles could be detected.…”

“…Studies on the spindle by means of the electron microscope were very few until now. So far as we know, there were those of the crayfish testis by Beams et al (1950) and of onion root-tip by Sedar and Wilson (1951). Their studies, however, have not cleared up completely the submicroscopic fibrillar structure of the spindle, because the fixatives they used had not been prescribed to maintain the fine structure of the spindle (See Wada and Fuku naga 1957).…”

Electron Microscope Studies on the Normal and Colchicinized Mitotic Figures of the Onion Root Tip (Allium Cepa)

“…Blocks 2 mm. square were sectioned at approximately 0.5 micron after the method of Beams, Evans, Baker and van Breemen (1950). Ribbons so obtained were spread on distilled water at 45 C. and mounted on grids previously covered with a supporting celloidin film prepared from a 2 per cent solution of celloidin in amyl acetate.…”

“…Various techniques have been brought to bear upon this problem. For a discussion, the monograph of Schrader (1944) should be consulted.Using the electron microscope, van Breemen (1950), andBeams, Evans, van Breemen and have studied the structure of the ONION ROOT TIP (ALLIUM CEPA)." The Biological bulletin 100, 107-115.…”

“…Using the electron microscope, van Breemen (1950), andBeams, Evans, van Breemen and have studied the structure of the ONION ROOT TIP (ALLIUM CEPA)." The Biological bulletin 100, 107-115.…”