Use of interactive videodisc for teaching of pathology laboratory cases

1990 ◽  
Vol 160 (2) ◽  
pp. 145-149 ◽  
Author(s):  
Kusum Kumar ◽  
Mark Hodgins
Keyword(s):  
Interactive Videodisc ◽  
Pathology Laboratory

Technical notes on routine TEM procedures

1987 ◽  
Vol 45 ◽  
pp. 630-631
Author(s):  
K. Chien ◽  
R.L. Van de Velde ◽  
R.C. Heusser
Keyword(s):  
Epoxy Resins ◽  
Pathology Laboratory ◽  
Silicone Fluid ◽  
Image Position

Sectioning quality of epoxy resins can be improved by the addition of a 1% silicone 200 fluid (Dow Corning), however this produces a softer block. To compensate, a harder plastic has been used for embedding various tissues encountered in our pathology laboratory. Exact amounts of the plastic mixture can be directly made up for embedding as shown: The chart reveals a Poly/Bed 812 (WPE 145) to anhydride ratio of 1:0.7 and a NMA to DDSA ratio of 7:3. 1% silicone fluid is added to above mixtures.Due to impurities within the DDSA and NMA, the polymerized epoxy blocks vary in darkness and appear to affect sectioning quality. After discussing this problem with Polysciences Inc., they have agreed to purify their anhydrides in an effort to standardize the consistency of the plastic.

Causes of death in beef cattle in southern Brazil

2021 ◽  
pp. 104063872110079
Author(s):  
Franciéli A. Molossi ◽  
Bianca S. de Cecco ◽  
Camila B. Pohl ◽  
Rogério B. Borges ◽  
Luciana Sonne ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Causes Of Death ◽  
Diagnostic Category ◽  
Diagnostic Value ◽  
Parasitic Diseases ◽  
Porto Alegre ◽  
Pathology Laboratory ◽  
Regional Location ◽  
Young Cattle ◽  
Postmortem Examinations

We determined the prevalence of diseases and pathogens associated with mortality in beef cattle in the State of Rio Grande do Sul, Brazil, based on pathology laboratory submissions. Postmortem examinations were conducted on 1,277 beef cattle that died between 2008 and 2018. Information regarding age, time of the year, breed, and regional location were analyzed statistically. Most cattle were from the surrounding region of Porto Alegre, and 78.7% of the analyzed cases had diagnostic value. The diagnostic category with most cases was infectious and/or parasitic diseases (60%), followed by toxic and toxicoinfectious (25%). Most cases occurred in the fall. Major disease conditions identified included hemoprotozoal infection (18.2%), rabies (8.2%), and plant intoxications by Senecio spp. (8.5%) and Pteridium arachnoideum (4.6%). Hemoprotozoal infection occurred at a higher frequency in young cattle, mainly in animals up to 1 y old. Intoxication by Senecio spp. was more frequent in cattle 2–3 y old.

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