prometaphase


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prometaphase

[prō′med·ə‚fāz]
(cell and molecular biology)
A stage between prophase and metaphase in mitosis in which the nuclear membrane disappears and the spindle forms.
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Prometaphase is not observed in any of the analyzed concentrations except for one 8-hour treatment, concentration of 100 [micro]g/ml and in the control cultures 3 prometaphases (Table 2).
A large number of microscope slides were analysed, where mitosis is stopped in prometaphase treated with Alprazolam concentration of 50 and 100 [micro]g/ml duration of 4 and 8-hours and 2-hours with colchicine concentration approximately 350 [micro]g/ml.
of Prophases Prometaphases duration cells In (hour) division total % total % Control 0 81 26 32.
Bibrachial and monobrachial chromosomes of different sizes were observed at prometaphase and metaphase II (Fig.
At spermatogonial prometaphases and metaphases chromosomes of different sizes were observed (Fig.
Strong LDM expression distributed evenly in the GV oocyte (Figure 2B), while, LDM immunostaining was at a basal level at prometaphase I, metaphase I, anaphase I and telophase I stage (Figure 2C, D, E and F).
Vinblastine stops the cell cycle between prometaphase and anaphase by altering spindle fibers (binding to microtubules and blocking polymerization into microtubules), preventing further replication.
The meiotic spindle is quadripolar in origin and develops from convergence of pairs of poles of the QMS in prometaphase I (Fig.
The QMS is transformed into a functionally bipolar spindle in prometaphase I by convergence of the four poles in pairs toward the division axis (Fig.
Cytogenetic examination of prometaphases revealed a chromosomal organization of mos 47,XY,+r(6)[3]/46,XY,r(6)[40]/ 45,XY,-6[7] (Picture 2).
For females, only oogonial prometaphases were studied because no meiotic stages can be detected.