MCQ
.........in animals have the ability to transform normal cells into cancerous cells
- ABacillus
- BAgrobacterium
- ✓Ritroviruses
- DSalmonella
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$(i)$ Grows from external surface by collecting substance on it.
$(ii)$ Grows from internal surface like living.
$(iii)$ Do not grow at all.
Which of the followings option is correct?