Briefly explain what type of disease COVID-19 is and how it is transmitted. Select one of the approved and recommended vaccines listed on the CDC site and explain its mechanism of action, and be sure to include: Is the vaccine

Our Western Blot experiment requires a buffer called TBS. At working concentration (1X), this buffer contains: 20 mM Tris 150 mM NaC1. Prior to use, however, the buffer is made and stored as a 10X concentrated stock What are the concentrations of these two ingredients in the 10X stock? Primary antibodies for the Western Blot experiment are prepared using this TBS buffer, with the addition of several other ingredients. Calculate the amount of each ingredient needed to produce10 ml of the final working antibody solution. b. 10X TBS stock c 0.01% (v/v) Tween detergent d. 3% (w/v) BSA (molecular weight 66430 g/mol) e. 1:10,000 dilution of antibody stock

A patient has a blood bank history of being type A positive. The patient has recently been diagnosed with carcinoma of the colon and now the reagent anti-B is showing a 1+ reaction with the patient's cells. Other typing results are as expected. Please explain.

Describe Covid-19, it’s mechanism of entry, and it’s deleterious effects. Be specific about receptor type used for viral entry.

Discuss, with examples, the advantages and limitations of testing for viral protein/nucleic acid and testing for antibody to the virus as diagnostic tests for a virus infection.

Discuss the potential of peptide and peptide-based inhibitors of SARS-CoV-2 entry. In your answer include the potential advantages of peptide drugs as well as challenges commonly encountered in developing peptide therapeutics.

With regard to the characteristics and replication of HIV discuss reasons why the virus is so difficult to control and vaccine development so problematic. Explain the role treatments currently play in helping control the spread of HIV and appraise how effective they are.