The phrase "a fibres" is not correct in written English.
The correct form would be "fibres" without the article "a," as "fibres" is plural.
Example: "The fabric is made from natural fibres that are environmentally friendly."
Alternatives: "some fibres" or "the fibres".
Immunoreactive varicose orexin A fibres were found throughout the hypothalamus.
The suprachiasmatic nucleus possessed little or no immunoreactive orexin A fibres in its core, but had fibres at its periphery.
The thalamic intergeniculate leaflet contained a plexus of immunoreactive orexin A fibres throughout its rostro-caudal extent.
Graduating in economics and business in 1945, he clambered his way up BPD, a private-sector chemicals company, to oversee a merger with Snia Viscosa, a fibres business, in 1968.
Three areas of the brainstem, the dorsal and median raphe nuclei and the locus coeruleus, were also investigated owing to their relevance to the circadian system and all were found to contain immunoreactive orexin A fibres.
"Today, ninety per cent goes through a glass pipe"—a fibre-optic cable.
Cold receptors such as those found in the skin of cats may be innervated by fast-conducting myelinated A-fibres or slow-conducting unmyelinated C-fibres.
While both cold and warm receptors are innervated by unmyelinated C-fibres that conduct discharge activity very slowly, cold receptors are predominantly served by thinly myelinated A-fibres that conduct impulses more rapidly than C-fibres.
Moreover, increased glutamate levels have been observed in the hind paw plantar skin following electrical stimulation of the sciatic nerve at intensities activating low threshold A-fibres.
In most rodent neuropathic pain models, the increases in oscillation amplitude and spontaneous ectopic firing seen in the cell bodies of A-fibres, including muscle afferents were induced by direct injury to the axon [21], [57], [58].
