Which of the following best describes an involuntary and painful erection of the penis that is

A laboratory technician performs an antibody titer. A reaction is detected in every dilution from 1:2 up to and including 1:64. What does this tell the technician about the amount of antibody present?

A) The amount of antibody in the original sample can be calculated by multiplying 64 by the total number of tubes used in the dilution. B) The antibody is able to detectably bind all the antigen present in a sample when the concentration of antibody is at a 1:64 dilution. C) There is enough antibody in the serum to react visibly with antigen when diluted 64-fold, but not at 128-fold or more. D) All of the above

What should be done with drugs that will expire within 6 months?

a. Mark or label with an expiration sticker. b. Rotate to the back of the shelf so they will not be dispensed. c. Return them to the manufacturer before the expiration date for full credit. d. Return them to the manufacturer before the expiration date for partial credit.