What is the primary cell type involved in humoral immunity?

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Which type of stimulus do mechanoreceptors detect? sound pain heat light