MCQ
Which role is played by Lactobacillus in our stomach?
- AHarmful
- BNeutral
- ✓Beneficial
- DSometimes $(a)$ and sometimes $(b)$
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$I.$ Gene therapy is a genetic engineering technique used to treat diseases at molecular level.
$II.$ Calcitonin is medically useful recombinant product in the treatment of infertility.
$III.$ Bt toxin is a biodegradable insecticide obtained from Bacillus thuringiensis.