"functional necessity for" is a grammatically correct and commonly used phrase in written English.
It can be used when discussing the requirement or need for something in order for a system, process, or object to function properly. Example: "In the field of automotive design, there is a functional necessity for efficient fuel consumption in order to meet environmental regulations."
However, a functional necessity for T cells to express two similar co-stimulatory receptors is not well understood.
Because there was comparable expression level of XRRA1 in both human and macaque, it suggests that there is a functional necessity for XRRA1 in mammalian testis (i.e. XRRA1 might serve as a testis-specific molecule).
Work on T-cell activation domains [11,12] has shown the functional necessity for these lipid species to cluster into domains [13] and the apparent role of lipid rafts in pathogen entry into cells [14,15], while recent reports have also revealed an association between membrane rafts and the haemagglutinin of influenza viruses [16].
While the evolutionary and functional necessity for non-long form PDE4 splice variants remains unclear, our analysis suggests they likely have a distinct role, unique from long form splice variants in the hydrolysis of cAMP, which is directly linked to the loss of UCR1 and UCR2 domains and may not be entirely related to the incorporation of variable amino termini.
He established that the human brain computes the disparities between images presented to each retina, giving rise to an inherent impression of solidity and relative depth. 1 It has been debated whether stereopsis is truly a functional necessity for humans; Fielder and Moseley suggest that it may well be beneficial for certain tasks involving complex visual presentations and hand-eye coordination.
We next examined the functional necessity of the different interneuron classes for grooming in response to antennal displacement.
Each surgical management strategy attempts in its own way to create a more ideal conduit by which the peripheral axons can return to their denervated targets and form functional synapses a necessity for the restoration of function.
Their successors, the austerely functional KX100 of 1985 and the pseudo-historic KX100 Plus of the late 1990s are unlikely to be missed, or adopted except out of pure functional necessity.
The foundations of architectural creation was defined both as utility and functional necessity.
In the end, structure space is freely explored here because it is entropically favorable for it to be explored, making structural variety an entropic artifact rather than a functional necessity.
The LSDs permit us to distinguish evolutionary contingency from functional necessity.
