This basic assumption has been challenged by the discoveries of mutation mechanisms in bacterial, yeast, and human cells that are activated during stress, controlled by stress response processes 2 4.
Various systems of axioms, or basic rules and assumptions, have been formulated as a basis for measurement theory.
Certain assumptions have been fulfilled.
Both assumptions have been challenged.
Both of these assumptions have been criticised.
High density array-based methods that make fewer assumptions about the nucleic acids to be detected have been suggested and developed [ 8, 9], but even here some basic assumptions have to be made.
But lately that assumption has been challenged.
Underlying today's orthodoxy, for instance, is a basic assumption that has been held by practically all management theorists and by most practitioners since the earliest days of thinking about organization; that is, since Henri Fayol in France and Walter Rathenau in Germany around 1900.
The basic assumptions of this model have been supported by first clinical findings [ 31].
It was not atypical in its most basic assumption which once would have been thought intolerable -- that unemployment at significant levels would continue into the indefinite future.
