a)At what wavelength (nm) on a spectrometer can this color be quantified?                      b) Record your results. Indicate on this page which boxes turned color.                    A B C + - 1:2           1:10           1:100             c) Based on these results, which patient(s) definitely have lupus, which definitely do not, and which require further testing?

You are working in a lab studying Streptococcus pyogenes as a cause of necrotizing fasciitiis.  You have an overnight culture that you want to know the starting concentration of, so do a set of six 1:10 serial dilutions (putting 1 mL from the stock into a 9 mL blank), with tube #1 being 1:10, #2 is 1:100, etc.    You plate 0.1 mL from tube 5 onto a blood agar plate and the next morning count 134 colonies.  How many bacteria (measured in CFU/mL) were in the overnight culture flask? A. 1.34 x 10^4 CFU/mL B. 1.34 x 10^5 CFU/mL C. 1.34 x 10^6 CFU/mL D. 1.34 x 10^7 CFU/mL E. 1.34 x 10^8 CFU/mL F. cannot tell based on the data given - you'd need to know the volume of the original culture flask

Which portion of the blood is used for the Elisa test? Explain.

Transillumination is used clinically for the detection of:

The following questions refer to the analysis of cells using flow  cytometry  A) When analyzing cells in a flow cytometer how do you ensure you are analyzing single  cells rather than doublets or clusters of cells and why is that important?  B) How do forward versus side scatter plots enable the characterization of different  types of blood cells in the blood of a patient? How does this relate to a potential  diagnosis of acute leukemia?  C) How do you determine if a patient has B cell versus T cell Leukemia? Why is it  important to know?

1. You are asked to make 150 ml of 2% agarose using a well-known buffer. How many grams will be used? a) 0.03 g b) 0.3 g c) 3 g d) 30 g 2. Place the following reactants in their proper order for the indirect ELISA test 1 = enzyme-linked antibody 2 = known antigen 3 = patient serum 4 = substrate

There are five spicule specimens, identify the specific type of spicule

A serological test methods was conducted to determine typhoid fever using serum ( Widal test).Determine the bellow outcome; a.i) Interpret the results and it's limitations. ii) suggest the quality control observed in performing the test.

Why is that bacterial slide agglutination technique important in diagnostic procedure?

What is the purpose of an agglutination reaction test?