What is the principle of PCR?

PCR and ELISA are two molecular diagnostic techniques. (a) How is PCR useful in molecular diagnosis? (b) What is the principle of ELISA?

Given below are two laboratory methods used for molecular diagnosis PCR, ELISA. What is the principle of ELISA>

(a) What is the Principle of calorimetry? OR What is the principle of "method of mixtures"? OR (b) On which law is the above principle based

What is the principle behind the principle of homogeneity of dimensions?

What is the other name of PCR machine?

What is the advantage of PCR and ELISA over conventional diagnostic methods.

What is the full form of PCR ? How is it useful in Biotechnology?