Experimental angina of the monkey induced by L forms of group A streptococci von Kagan, G Y, Prozorovsky, S V, Koptelova, E I, Petrosova, V N, Dagnko, E V, Tcherkovitch, E M, Simovonian, V G, Mezentsev, A M, Kavtoradze, K N, Mikhailova, V S

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