Many of the ideas raised by Ehrlich's conception of selective theory were true.Which of the following ideas (if any) were later shown to be FALSE?

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Ehrlich's selective theory, which includes the ideas that interaction between a cell-bound receptor and a pathogen could induce the cell to proliferate, the specificity of receptors is determined prior to exposure to a foreign antigen, the antigen selects the appropriate receptor in a specific manner, and the binding of a receptor to an infectious agent is like the fit between a lock and a key, has foundational elements that have been proven true in the field of immunology.

Many of the Ideas Raised by Ehrlich's Conception of Selective