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29/07/2021 8:57 pm
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Tobacco mosaic virus is a tubular filament of size
(1) 300 × 5 nm
(2) 700 × 30 nm
(3) 300 × 20 nm
(4) 300 × 10 nm
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29/07/2021 8:58 pm
Correct option: (3) 300 × 20 nm