Define null cells
Define null cells. Answer: The lymphocytes which are devoid of markers for T and B-cells are termed as null cells.
Define null cells.
Answer: The lymphocytes which are devoid of markers for T and B-cells are termed as null cells.
Why is it a strong evolutionary hypothesis which, though viruses are the structurally simplest beings they were not the initial living beings?
Explain how gymnosperms are different from the pteridophytes and bryophytes?
Describe in detail the terms scotopic and photopic vision?
Give a few symptoms of the serum sickness?
State some of the organs of excretory system?
Explain, why use of the condoms is not just a contraceptive method but also a health protection behavior?
In ancient Greece, father of the Medicine, Hypocrates, explained the phenomenon of diagnosing diabetes mellitus by tasting the patient's urine. Specify the physiological explanation for this archaic method?
Name the most ammoniotelic beings aquatic animals?
Write down the uses of the indirect immuno fluorescence.
State two main classes into which the fishes are divided?
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