But such speculation needs to be tested  we cant just rely on an educated guess. As such, it is sometimes harvested from people who have recovered from a disease and transfused into patients who are fighting it. However, data were still being collected in randomized controlled trials  the gold standard  to study the safety and effectiveness of the treatment. Get CNN Health's weekly newsletter Sign up here to get The Results Are In with Dr. Sanjay Gupta every Tuesday from the CNN Health team. Such purified antibodies are already used to treat patients with antibody deficiencies.
the got sick people so its safe and effective
( z0 cause :ARG0 ( z1 get :ARG1 ( z2 it ) :ARG2 ( z3 person :ARG1-of ( z4 sick ) ) ) :ARG1 ( z5 and :op ( z6 safe :ARG0 z2 ) :op ( z7 effective :ARG0 z2 ) ) )
(z0 / cause-01
    :ARG0 (z1 / get-03
              :ARG1 (z2 / it)
              :ARG2 (z3 / person
                        :ARG1-of (z4 / sick-05)))
    :ARG1 (z5 / and
              :op1 (z6 / safe-01
                       :ARG0 z2)
              :op2 (z7 / effective-04
                       :ARG0 z2)))
the got sick people so its safe and effective
z3 :ARG1-of z4
z1 :ARG2 z3
z0 :ARG0 z1
z1 :ARG1 z2
z6 :ARG0 z2
z5 :op1 z6
z0 :ARG1 z5
z5 :op2 z7
z7 :ARG0 z2