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Super Antigen and Antibody dependent cytotoxicity موجود في playlist Immunology

@@DrMohamedSherifLectures شكررا جدا ياا دكتور

شاهدي playlist العملي

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Check autoclaving

@@DrMohamedSherifLectures انا بحثت في فيديوهات حضرتك ولم أجد ، هل حضرتك تقصد اشوف فيديو ال autoclave, ام تقد ان اعقم اليوريك اسيد بال autoclave, انا قرأت في بحث ان اليوريك يتكسر عند درجه ٦٠ مئوية، هل هذا الكلام صحيح ام لا، لأني لم أجد المعلومه غير في بحث واحد

علي حسب معلوماتي استخدم autoclaving

شكرا جزيلا لحضرتك يا دكتور😊

www.ncbi.nlm.nih.gov/pmc/articles/PMC1594681/ For all organisms, the colony numbers were similar on all agars. Substantially smaller colony sizes and absent or minimal hemolysis were noted on HuBA for all organisms. Antibiotic susceptibility results for S. pneumoniae were similar for the two sheep blood agars; however, larger zone sizes were displayed on HuBA, and quality control for the reference strain failed on HuBA. For S. pyogenes, larger zone sizes were demonstrated on HuBA and CSBA than on DSBA. Poor hemolysis made interpretation of the zone sizes difficult on HuBA. CSBA is an acceptable alternative for the isolation of these organisms. The characteristic morphology is not evident, and hemolysis is poor on HuBA; and so HuBA is not recommended for use for the isolation or the susceptibility testing of any of these organisms. CSB MHA may be suitable for use for the susceptibility testing of S. pneumoniae.

@@DrMohamedSherifLectures استاذ هذا جوابه

In short, human blood usually contain antibodies against many organisms which can inhibit the growth of these organisms.

@@DrMohamedSherifLectures شكرا جزيلا استاذ وفقك ربي

@@DrMohamedSherifLectures طيب واشمعنا دم الانسان فيه مضادات ودم الخروف مفهوش ؟؟

Differential media or indicator media distinguish one microorganism type from another growing on the same media. This type of media uses the biochemical characteristics of a microorganism growing in the presence of specific nutrients or indicators (such as neutral red, phenol red, eosin y, or methylene blue) added to the medium to visibly indicate the defining characteristics of a microorganism. This type of media is used for the detection of microorganisms and by molecular biologists to detect recombinant strains of bacteria. Examples of differential media include: Blood agar (used in strep tests), which contains bovine heart blood that becomes transparent in the presence of hemolytic. Streptococcuseosin methylene blue (EMB), which is differential for lactose and sucrose fermentation. MacConkey (MCK), which is differential for lactose fermentationmannitol salt agar (MSA), which is differential for mannitol fermentation. X-gal plates, which are differential for lac operon mutants.

Generally, an indicator is an event, entity or condition that typically characterises a prescribed environment or situation, indicators determine or aid in determining whether or not certain stated circumstances exist or criteria are satisfied. In microbiology, it is used in the MacConkey agar to differentiate bacteria for lactose fermentation.Neutral red can be used as a vital stain. Live cells incorporate neutral red into their lysosomes. As cells begin to die, their ability to incorporate neutral red diminishes. Thus, loss of neutral red uptake corresponds to loss of cell viability. It is also used to stain cell cultures for plate titration of viruses.