A | B | C | |
1. | Proto-oncogene | Viral oncogene | Reverse transcriptase |
2. | Oncogene | Viral oncogene | DNA dependent DNA polymerase |
3. | Viral-oncogene | Proto-oncogene | DNA dependent DNA polymerase |
4. | Proto-oncogene | Oncogene | DNA dependent RNA polymerase |
COLUMN I | COLUMN II |
A | Antibodies from other sources |
B | Immunization |
C | Exposure to infectious agents |
D | Maternal antibodies |
Antibodies from other sources | Immunization | Exposure to infectious agents | Maternal antibodies | |
1. | A | B | C | D |
2. | D | A | C | B |
3. | C | B | A | A |
4. | D | B | A | C |