- How partial C7 deficiency with chronic and recurrent bacterial infections can mimic total C7 deficiency: temporary restoration of host C7 levels following plasma transfusion. Würzner, R., Platonov, A.E., Beloborodov, V.B., Pereverzev, A.I., Vershinina, I.V., Fernie, B.A., Hobart, M.J., Lachmann, P.J., Orren, A. Immunology (1996)