Skin testing is another type of IDP, but one that is performed in vitro (in the patient) rather than in vivo (in the laboratory). In skin testing, antigens are injected within or beneath the skin (intradermally or subcutaneously, respectively). An example of a commonly used skin test is the TB skin test (previously described). Skin testing is also used to determine the allergens to which an atopic individual is allergic. (1 Point)TrueFalse

Which of the following is a true statement about the tuberculin skin test?ANSWERIt detects exposure to Mycoplasma tuberculosis.It is a classic example of a type I hypersensitivity reaction.For the test, PPD is injected into the skin of the forearm.The test can differentiate between natural exposures and vaccination against tuberculosis.

The property of immunological testing that allows focus on a certain antibody and antigen without cross reaction is called .

The branch of immunology that deals with the in vitro testing of serum is referred to as .

Cosmetics manufacturing is an area where testing with synthetic human skin is an acceptable substitute for animal testing.Question 2Select one:a.Trueb.False

How are autoimmune disorders diagnosed?ANSWERDiagnosis is made by injecting PPD under the skin in the forearm.Usually a single test is sufficient in order to diagnose an autoimmune disorder.Diagnosis is made by determining the erythrocyte sedimentation rate (ESR).A collection of tests and careful assessment of signs and symptoms are required.