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Why does addition of a bacitracin disk to a blood plate make a rapid identification technique?
In terms of beta hemolytic streptococcus they usually plate this bacteria on blood agar bc when it grows it forms small colonies (bc gram +) with a clear halo around it bc it is hemolytic...this is not the only bacteria to cause hemolysis in blood agar so one might put a bacitracin disk in the plate and bc this inhibits growth of beta hemolytic strep if you see small colonies with clear halos growing everywhere but near the bacitracin disk then this too is indicative of id-ing this bacteria as beta hemolytic strep...hope this helps...enjoy:)
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What is the type of cell found on human blood that uses this technique for capturing and destroying bacteria?
leukocyte
A organism grown on blood cause beta hemolysis can be considered?
A bacterium grown on blood that causes beta hemolysis indicates that it lyses (breaks down) red blood cells completely, leaving a clear zone around the colony on blood agar. This can be seen in organisms such as Streptococcus pyogenes, which can cause serious infections like strep throat and skin infections.
Role of spooling in blood DNA isolation?
spooling of the DNA results from the addition of the ethanol which is insoluble in the solution. after we get he DNA in the form of spooling structure the solution is centrifuged. so we get the DNA.
Identification tags that are on red blood cells?
These tags are actually called antigens. There are several but the most familiar are used to identify blood for transfusions. These are called O, AB, B, or A and are genetically determined.
What is laboratory technique in which the body radioactively labeled a substance is mixed with a blood specimen?
The laboratory technique you are referring to is known as radioimmunoassay (RIA). In RIA, a radioactive substance is used to label a specific molecule or antigen, and when this labeled molecule is mixed with a blood specimen containing the corresponding antibody, the level of radioactivity can be used to quantify the amount of antigen present in the blood sample.
What is an ultrasound technique used to detect and measure blood-flow velocity?
This technique is a form of Doppler measurement referred to as Blood Flow Imaging (BFI). It can indicate blood flow directionally in addition to measuring velocity.
Which blood components are directly pertinent to the forensic aspects of blood identification?
Platelets and Blood Serum
Which blood components are directly pertinent to the forensic aspect of blood identification?
Platelets and Blood Serum
How is chemistry involved with criminal law?
Examples: identification of gun powder, drugs, revealing of fingerprints, blood and sperm identification, explosive identification, toxicological analysis etc.
What technique creates a three-dimensional dynamic image of blood vessels?
What technique creates a three dimensional dynamic image of blood vessels
Which cultures can be used for the identification of staphylococcus aureus from blood?
beta hemolysis
Which blood types will clump with the addition of anti a serum?
Blood types A and AB will clump with the addition of anti-A serum. The serum reacts with the A antigen present in these blood types to produced clumping.
Why is blood necessary in the solution of crime?
Because the blood is specific for each person; it is necessary for identification. Blood carries DNA in the white cells.
What is the correct technique when obtaining a capillary blood specimen?
Squeeze,hard to get,the blood flowing quickly
What technique is used when only a small amount of blood is needed as a specimen for a blood test?
Capillary Puncture
What is hemodialysis?
Its a technique of "cleaning" the blood external to the body, i.e. artificial kidney
What is The technique for determining specific protein types that are present on RBCs?
Blood typing
