the results of these analyses indicate ( 1 ) that the sudan and zaire isolates are unique viral agents , ( 2 ) that multiple isolates within each group bear close resemblance to one another , ( 3 ) that suggestive evidence exists of conservation of homologous structure in the vp-2 ( virion protein no . 2 ) nucleocapsid proteins of these viruses , and ( 4 ) that protein differences between the two ebola virus subtypes appear to reside in the vp-1 and vp-3 virion polypeptides .
C0524816
nucleocapsid proteins
C0042776
viruses