MITOSIS IN ADULT NEWT VENTRICLE
نویسندگان
چکیده
منابع مشابه
Mitosis in Adult Newt Ventricle
Two recent electron microscope studies have demonstrated mitosis in embryonic cardiac fibers . In the chick (3) and the rat (8), both myofibrils and mitotic chromosomes were seen within the same cells. In the normal adult heart, however, cardiac fibers do not usually undergo cell division (2, 7) . The ability of adult cardiac fibers to divide after injury has been a matter of controversy (revie...
متن کاملHeterogeneous proliferative potential in regenerative adult newt cardiomyocytes.
Adult newt cardiomyocytes, in contrast to their mammalian counterparts, can proliferate after injury and contribute to the functional regeneration of the heart. In order to understand the mechanisms underlying this plasticity we performed longitudinal studies on single cardiomyocytes in culture. We find that the majority of cardiomyocytes can enter S phase, a process that occurs in response to ...
متن کاملOpsin expression in adult, developing, and regenerating newt retinas.
Japanese common newts (Cynops pyrrhogaster) have an ability to regenerate their neural retina even as adults. Although extensive research has been carried out attempting to understand this retinal regeneration, the molecules characterized in newt retina are limited. We isolated cDNAs encoding three putative opsins (Cp-Rh, -LWS and -SWS1), in addition to Cp-SWS2 [Takahashi et al., FEBS Lett. 501...
متن کاملSpontaneous epidermal tumor in an adult newt, Cynops pyrrhogaster.
Reports of spontaneous tumors occurring in urodele amphibians are rare (1-7, 9, 11, 13-15), and it has been suggested that animals that regenerate well, such as newts, retain powerful morphogenetic fields capable of controlling any aberrant cells that arise (8, 10, 12). It is certainly surprising that there are very few reports of spontaneous skin tumors in urodeles since, of all tumors, these ...
متن کاملPoleward kinetochore fiber movement occurs during both metaphase and anaphase-A in newt lung cell mitosis
Microtubules in the mitotic spindles of newt lung cells were marked using local photoactivation of fluorescence. The movement of marked segments on kinetochore fibers was tracked by digital fluorescence microscopy in metaphase and anaphase and compared to the rate of chromosome movement. In metaphase, kinetochore oscillations toward and away from the poles were coupled to kinetochore fiber shor...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1971
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.49.2.560