Why is it important in a sandwich elisa that the antigen has multiple epitopes? and why might it be advantageous to use polyclonal antisera rather than mab in this assay?

Johannesburg kepler, an apprentice of brahe, believed in the heliocentric universe but rejected past astronomers belief in

How do you transfer mrna into codons ? i'm so confused : (

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change