Interestingly, in Drosophila, peripheral glia form tubes required for accurate sensory axon entry to the CNS, and studies have described similar reciprocal interactions between the two cell types (Sepp and Auld, 2003; Sepp et al., 2001).
These cells express Krox20 and produce peripheral glia along the sensory axons entering the dorsal entry zone and motor axons exiting the ventral neural tube at prospective motor exit points [ 34].
Gustatory pheromones are thought to activate P1 neurons but the circuit mechanisms that dictate their sensory responses to gate entry into courtship remain unknown.
Calcium entry into sensory neurons in the dorsal horn induces activation of nitric oxide (NO) synthase, leading to the synthesis of NO [ 37].
The C. elegans tyrosine-kinase receptor gene ver-1 is expressed in the AMsh and phasmid sheath (PHsh) glia of the amphid and phasmid sensory organs upon dauer entry and at high temperature (25°) and is important for amphid glia remodeling in dauers.
The critical effects were considered the portal-of-entry effects, sensory irritation of the eyes and the upper airways, resulting in a guideline value of 0.1 mg/m that should not be exceeded for any 30-min period of the day (WHO 2010).
The two motor neurons and the sensory neuron ASN provide an entry point to elucidate defecation circuitry.
The infected cells are lysed, releasing virus to spread to other cells and sensory nerve endings, although direct entry into neurons without replication can occur (3 ).
According to this framework, conscious perception requires neuronal activity of the sensory areas together with an entry into this workspace realized by long-range cortical coupling.
Indeed, confocal images of a double staining for Wls and β-gal showed that in Wnt1-Cre R26R control animals, Wls was expressed at the site of the dorsal entry point of sensory neurons in the dorsal neural tube.
