Plasma is the clear, yellowish liquid part of the blood which carries red and white blood cells and platelets around the body. But such speculation needs to be tested  we cant just rely on an educated guess. While this is a blow to the use of plasma therapy for Covid-19, it should not be abandoned, there may be ways to refine it as a treatment and deliver solid, demonstrable benefits, Clarke said in a written statement distributed by the UK-based Science Media Centre. Such purified antibodies are already used to treat patients with antibody deficiencies. After an infection, plasma is often packed with antibodies generated by the immune system.
While excess of plasma is used for treating anemia, it should not be declined from a solid material.
( z0 contrast :ARG1 ( z1 recommend :ARG1 ( z2 decline :ARG1 ( z3 plasma :mod ( z4 excess ) ) :source ( z5 material :ARG1-of ( z6 solid ) ) ) :polarity - ) :ARG2 ( z7 use :ARG1 z3 :ARG2 ( z8 treat :ARG1 ( z9 anemia ) :ARG2 z3 ) ) )
(z0 / contrast-01
    :ARG1 (z1 / recommend-01
              :ARG1 (z2 / decline-02
                        :ARG1 (z3 / plasma
                                  :mod (z4 / excess))
                        :source (z5 / material
                                    :ARG1-of (z6 / solid-02)))
              :polarity -)
    :ARG2 (z7 / use-01
              :ARG1 z3
              :ARG2 (z8 / treat-03
                        :ARG1 (z9 / anemia)
                        :ARG2 z3)))
While excess of plasma is used for treating anemia , it should not be declined from a solid material .
z3 :mod z4
z7 :ARG1 z3
z0 :ARG2 z7
z7 :ARG2 z8
z8 :ARG2 z3
z8 :ARG1 z9
z0 :ARG1 z1
z1 :polarity 0
z1 :ARG1 z2
z2 :ARG1 z3
z5 :ARG1-of z6
z2 :source z5