Open QuestionAn anesthesia technician is advised that she should be vaccinated against hepatitis B, which is caused by a virus. She is given one injection and is told to come back for a second injection in a month and a third injection after 6 months. Why is this series of injections necessary?
Open QuestionWhich of the following is not a role of TH cells?a. Stimulation of macrophagesb. Activation of naïve TC cellsc. Stimulation of naïve B cellsd. Stimulation of clonal selection
Open QuestionMark the following statements as true or false. If a statement is false, correct is to make a true statement.c. Subunit vaccines consist of pathogens that are alive but unable to cause disease.
Open QuestionThe specificity of an antibody is determined by the (a) fixed segment, (b) antigenic determinants, (c) variable region, (d) size of the antibody, (e) antibody class.