Some segmental structural features of the aortic wall of domestic chicken (Gallus domesticus)
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چکیده
منابع مشابه
Appraisal of Lead in the Organs and Tissues of Domestic Chicken (gallus Gallus Domesticus) in Ibadan
As a result of rapid industrialization and urbanization in developing countries of West Africa, heavy metal pollution is likely to reach disturbing levels. The problem is that preparations are not being made towards the protection of the environment. Nigeria is one of the petroleum exporting countries and use of automobiles by middle and high income groups is rather high. In fact, the growing r...
متن کاملLampbrush chromosomes of the chicken, Gallus domesticus
We examined lampbrush chromosomes (LBC) prepared from chicken oocytes of 1-3-mm diam using both light and electron microscopy. Both macro- and microchromosomes form LBC with morphologies very similar to the well known newt and salamander LBC. In chicken LBC typical loops have a contour length of approximately 15 microns, although some loops range up to 50 microns. Multiple transcription units a...
متن کاملOptics of cone photoreceptors in the chicken (Gallus gallus domesticus)
Vision is the primary sensory modality of birds, and its importance is evident in the sophistication of their visual systems. Coloured oil droplets in the cone photoreceptors represent an adaptation in the avian retina, acting as long-pass colour filters. However, we currently lack understanding of how the optical properties and morphology of component structures (e.g. oil droplet, mitochondria...
متن کاملLateralization of social cognition in the domestic chicken (Gallus gallus).
In this paper, we report on the ongoing work in our laboratories on the effect of lateralization produced by light exposure in the egg on social cognition in the domestic chick (Gallus gallus). The domestic chick possesses a lateralized visual system. This has effects on the chick's perception towards and interaction with its environment. This includes its ability to live successfully within a ...
متن کاملDNA replication in the chromosomes of the chicken, Gallus domesticus.
DNA fibre autoradiography has been used to study the replication of chromosomal DNA from chicken cells in tissue culture at 37 °C. The 5-phase is estimated to be about 75 h. Replication proceeds in the manner first described by Huberman & Riggs. Tandemly arranged units replicate bi-directionally from fork-like growing points, the times of initiation of individual replicating sections being stag...
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ژورنال
عنوان ژورنال: Brazilian Journal of Veterinary Research and Animal Science
سال: 2003
ISSN: 1413-9596
DOI: 10.1590/s1413-95962003000900001