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Q. What is Aflatoxin?
Aflatoxins are the most widely studied of all mycotoxins. Knowledge of their existence dates from 1960, when more than 100,000 turkey died in England after eating peanut meal imported from Africa and South America. From the poisonous feed were isolated Aspergillus flavus and a toxin produced by this organism that was designated aflatoxin (Aspergillus flavus toxin- A-fla-toxin). These compounds are highly substituted coumarins, and at least 18 closely related toxins are known. Aflatoxin B1 is the most important of this large family of compounds and is produced by Aspergillus flavus, A. parasiticus and A. nominus. The toxicity of the six most potent aflatoxins decreases in the following order: B1>M1>G1>B2>M2≠G2.
Polyenes: amphotericin b Amphotericin B products are the only polyenes currently available for systemic treatment of fungal infections. Nystatin, another polyene, is only avai
Glanders The disease, also known as equine nasal phithisis, farcy or malleus, is highly infectious anthropozoonosis and is caused by Burkholderia (earlier Pseudomonas) mallei.
N a ture of viruses Viruses vary in their size ranging from 20 nm (200 Ao) to 350 nm (3,500 Ao) and in shapes from spherical to bullet, rod, brick or filamentous forms. Some
Agroup of realated genera are classified as-?
Some species of plant are strongly adapted to pollination by certain insects. Characteristics which are regarded as adaptations to pollination by bees are: ( a) white o
Determine sequence weights for the sequences ACTA, ACTT, CGTT, and AGAT in problem 1 by using Thompson, Higgins, and Gibson method a) compute pairwise distances between sequences
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How is the human foetus expelled from the uterus of its mother: The total time required for the embryonic and foetal development is called gestation period which is usually
Eric Davidson isolated and compared the sequences of mRNA transcripts and genomic DNA from the sea urchin. Which of the following is a true statement regarding his findings? A.
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