aster


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aster

 [as´ter]
a structure occurring in dividing cells, composed of microtubules radiating from a centrosome. The two asters are the poles of the spindle apparatus.
 Asters separating in prophase of mitosis. From Dorland's, 2000.

as·tro·sphere

(as'trō-sfēr),
A set of radiating microtubules extending outward from the cytocentrum and centrosphere of a dividing cell.
[G. astron, star, + sphaira, ball]

aster

/as·ter/ (as´ter) [L.] a system of microtubules arranged in starlike rays around each pair of centrioles during mitosis.
Enlarge picture
Asters separating in prophase of mitosis.

aster

(ăs′tər)
n.
Biology A star-shaped structure formed in the cytoplasm of an animal cell during mitosis, having raylike microtubules that surround the centrosome.

as·tro·sphere

(as'trō-sfēr)
A set of radiating microtubules extending outward from the cytocentrum and centrosphere of a dividing cell.
Synonym(s): aster, attraction sphere.
[G. astron, star, + sphaira, ball]
Asterclick for a larger image
Fig. 54 Aster . Generalized form.

aster

a group of blind-ending SPINDLE MICROTUBULES radiating out from the CENTRIOLES of dividing cells in lower plants and all animals. The aster function is uncertain, but does not seem to be concerned with spindle formation.

Aster

genus of selenium indicator plants in the family Asteraceae; preferentially accumulates selenium from the soil. Includes A. adscendens, A. coerulescens, A. commutatus, A. ericoides, A. glaucoides, A. laevis var. geyeri. See also xylorrhiza.

aster

a structure occurring in dividing cells, composed of microtubules radiating from a centrosome. The two asters are the poles of the mitotic spindle.
References in periodicals archive ?
Dr Azad Moopen, chairman and managing director, Aster DM Healthcare, said, "We are honoured to sign this MoU with SHA to provide a wide range of health care services to the citizens, elderly residents and government employees of Sharjah.
For nearly five years, Aster DM Healthcare has been working to establish a speciality hospital in the tribal district of Wayanad, one of the least developed areas in Kerala that lacked advanced healthcare facilities.
Dr Moopen, who claims he sets aside 20 per cent of his wealth to help others, has also launched Aster Volunteers, a health and wellness initiative that focuses on spreading hope and inspiring people to look out for each other.
Harish Pillai, cluster head for Kerala and CEO Aster Medcity said: "Aster DM Healthcare is a home grown entity that is fully committed to the State of Kerala and the announcement of these projects shows our constant endeavor to improve healthcare services for the community.
In this study, spot elevation extracted from the toposheet were used as a reference elevation data to evaluate accuracy of the SRTM and ASTER DEMs.
I rmly believe that it should happen soon given the pace at which Dubai is progressing towards realising its smart city initia- tives, thus encouraging digitalisation and innovation," said Aster Pharmacy's chief executive of cer Jobilal Vavachan.
Keeping in mind the growing need for hospital facilities in the Philippines, especially for cardiac diseases and cancer care, we hope to be able to extend our network from primary care facilities to secondary and tertiary care facilities in the future, said Alisha Moopen, Aster DM Healthcare executive director and group CEO for hospitals and clinics.
One good idea is to use x another aster for this task - such as low-growing varieties of Aster ericoides.
Aster DM Healthcare's chairman Dr Azad Moopen was awarded Healthcare CEO of the Year at CEO Middle East Awards 2015 for building the Aster DM Healthcare brand into the fastest growing healthcare provider in the Middle East and across India.