Which of the following is a neutralization test?: (A) Schick test, (B) ASLO, (C) Haemagglutinin test, (D) VDRL test
Answer is A. Neutralization tests:1.Virus neutralization tests2.Toxin neutralization3.Schick test4.Anti-streptolysin O (ASO)5. Nagler's reactionRef: Ananthanarayan 9th edition, 112