Confocal microscopic analysis of erythrocytes and erythroplastids from Major Mitchell’s cockatoos ( Lophochroa leadbeateri )

Abstract The majority of avian erythrocytes retain their nucleus throughout the circulatory lifespan of the cell; however, a small proportion of avian erythrocytes are enucleated to form erythroplastids. Previously, we have reported a Major Mitchell’s cockatoo that had a much greater proportion of erythroplastids than typically observed in avian blood. To further classify the erythrocytes of this bird, we employed fluorescent laser scanning confocal microscopy. Fluorescence of the cytoplasm of erythroid cells, including erythroplastids, facilitated assessment including z-stack analysis. Erythroplastids had a mean volume of 118 fL and were predominantly elliptical with minor depressions and infolding of cell surfaces.
Source: Comparative Clinical Pathology - Category: Pathology Source Type: research

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Short-eared Owl at Burwell Fen, photographed mid-January One evening in late November, I was once again, hoping to catch sight of the Starling murmurations that occur over the Broad Lane balancing pond. As mentioned in a previous, issue the local Starlings and their continental counterparts will often roost in the reed bed there, last winter there were literally thousands. At the time of writing, just a few hundred are roosting, but that can change on a wind as arrivals from Europe turn up when the weather changes. Anyway, reader Alison waved as she passed the pond on her dog walk. I later heard that she’d seen a scu...
Source: David Bradley Sciencebase - Songs, Snaps, Science - Category: Science Authors: Tags: Birds Source Type: blogs
The avian predentary is a small skeletal structure located rostral to the paired dentaries found only in Mesozoic ornithuromorphs. The evolution and function of this enigmatic element is unknown. Skeletal tissues forming the predentary and the lower jaws in the basal ornithuromorph Yanornis martini are identified using computed-tomography, scanning electron...
Source: Proceedings of the National Academy of Sciences - Category: Science Authors: Tags: Biological Sciences Source Type: research
Conclusions: Majority of our patient were female and homemaker, emphasizing the growing role of home environment in causing HP. Pigeon or avian droppings were the most commonly identified inciting agents. Sixty percent of patients had other diagnosis including Tuberculosis. It shows less amount of awareness about the disease among community and treating primary care physicians.
Source: European Respiratory Journal - Category: Respiratory Medicine Authors: Tags: ILD/DPLD of known origin Source Type: research
In conclusion, the present study reports prevalence and gradual increase of amantadine resistance among AI H9N2 viruses in India, emphasizing the importance of the antiviral surveillance.
Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
We examined extremely low-reflectance, velvety black plumage patches in 32 bird species from 15 families and five orders and compared them with 22 closely related control species with normal black plumage. We used scanning electron microscopy to investigate microscopic feather anatomy, and applied spectrophotometry and hyperspectral imaging to measure plumage reflectance. Super black plumages are significantly darker and have more broadband low reflectance than normal black plumages, and they have evolved convergently in 15 avian families. Super black feather barbules quantitatively differ in microstructure from normal bla...
Source: Journal of Experimental Biology - Category: Biology Authors: Tags: RESEARCH ARTICLE Source Type: research
Publication date: Available online 24 September 2019Source: Veterinary ParasitologyAuthor(s): Zhengkai Wei, Yingchi Zhao, Nan Zhang, Zhen Han, Xiao Liu, Aimin Jiang, Yong Zhang, Chaoqun Wang, Pengtao Gong, Jianhua Li, Xichen Zhang, Zhengtao YangAbstractAvian coccidiosis makes a great threat and economic loss to the poultry industry, and fully understanding the innate immune response of chicken against E. tenella infection will play a significant role in avian coccidiosis prevention and treatment. Extracellular traps have been reported as a novel defense mechanism of host against pathogens infection. However, the interactio...
Source: Veterinary Parasitology - Category: Veterinary Research Source Type: research
After the initial identification of the H1N1 pandemic influenza strain in Mexico in April 2009 and its subsequent global spread, several monovalent influenza vaccines were developed as part of the pandemic response. Three of these vaccines, Pandemrix, Arepanrix and Focetria were adjuvanted. One of these, the AS03-adjuvanted Pandemrix vaccine, was primarily used in Europe. Following widespread Pandemrix vaccine administration in Scandinavia, an increased risk of narcolepsy was noted in observational studies. Subsequently, this increased risk was also reported in other European countries as well. In contrast, studies from Ca...
Source: The Pediatric Infectious Disease Journal - Category: Infectious Diseases Tags: Vaccine Reports Source Type: research
Publication date: 1 October 2019Source: Colloids and Surfaces B: Biointerfaces, Volume 182Author(s): Taek Lee, Ga Hyeon Kim, Soo Min Kim, Keonyoung Hong, Younghun Kim, Chulhwan Park, Hiesang Sohn, Junhong MinAbstractIn the present study, we fabricated a label-free avian influenza (AIV H5N1) detection biosensor composed of a multi-functional DNA 3 way-Junction (3 W J) on a hollow Au spike-like nanoparticle (hAuSN) using a localized surface plasmon resonance (LSPR) method. To construct the multi-functional DNA (MF-DNA) as a bioprobe, the 3 W J was introduced. The proposed AIV detection bioprobe sh...
Source: Colloids and Surfaces B: Biointerfaces - Category: Biochemistry Source Type: research
Abstract In the present study, we fabricated a label-free avian influenza (AIV H5N1) detection biosensor composed of a multi-functional DNA 3 way-Junction (3 W J) on a hollow Au spike-like nanoparticle (hAuSN) using a localized surface plasmon resonance (LSPR) method. To construct the multi-functional DNA (MF-DNA) as a bioprobe, the 3 W J was introduced. The proposed AIV detection bioprobe should contain three functionalities: target recognition, signal amplification, and connection to substrate. To achieve this goal, each piece of the DNA 3 W J was tailored to a hemagglut...
Source: Colloids and Surfaces - Category: Biotechnology Authors: Tags: Colloids Surf B Biointerfaces Source Type: research
Publication date: Available online 4 June 2019Source: Research in Veterinary ScienceAuthor(s): Reza Hoseini Shahidi, Gholamreza Hashemi Tabar, Mohammad Reza Bassami, Abdollah Jamshidi, Hesam DehghaniAbstractAn Escherichia coli (E. coli) O2:K1 bacterial ghost was produced by controlled expression of bacteriophage PhiX 174 lysis gene E. Temperature controlled expression of this gene caused tunnels and holes in the cell wall of E. coli O2:K1 bacterium, leading to loss of cytoplasmic contents. Formation of E. coli O2:K1 ghost was confirmed by scanning electron microscopy and determination of colony forming units. To evaluate t...
Source: Research in Veterinary Science - Category: Veterinary Research Source Type: research
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