Fine structure of the taste bud in guinea pigs. I. Cell characterization and innervation patterns.

Fine structure of taste buds located on the lamb epiglottis

“…Like Ide and Munger (1980), these investigators found synapses on only one cell type which they classified as the Type 111 or receptor cell. The presence of synapses and concentrations of vesicles in only one cell type of upper airway taste buds in monkey and mouse are similar to characteristics reported for oral taste buds in several species (Farbman et al, 1985;Murray and Murray, 1971;Paran et al, 1975;Royer and Kinnamon, 1991;Takeda, 1976;Yoshie et al, 1990). However, investigations in some species, including recent studies that have examined mouse foliate and vallate taste buds, suggest that there are synapse-like structures on more than one cell type within the taste bud (Delay and Roper, 1988;Kinnamon et al, 1985Kinnamon et al, , 1988Reutter, 1978;Royer and Kinnamon, 1988).…”

“…These groups were Type I, Type 11, and basal cells. Most of the morphological characteristics of the cell types in taste buds on the lamb epiglottis were similar to the Type I (Dark), Type I1 (Light), and basal cells present in oral taste buds of several mammalian species including sheep (Farbman et al, 1985;Kinnamon et al, 1985;Miller and Chaudhry, 1976;Mistretta and Bradley, 1983;Murray and Murray, 1967;Paran et al, 1975;Kinnamon, 1988,1991;Takeda, 1976;Takeda and Hoshino, 1975;Yoshie et al, 1990). The cells in taste buds of the lamb epiglottis were also similar to previously described cells types in taste buds located in the epithelium overlying the monkey arytenoid cartilage (Ide and Munger, 1980) and mouse pharyngealllaryngeal taste buds (Suzuki and Takeda, 1983).…”

Ultrastructure of palatal taste buds in the perihatching chick

“…In general, axo-axonal profiles are not evident in adult chicken material (Ganchrow and Ganchrow, unpublished observations); they have been reported to be present primarily in early-to midgestational fetal macaques (Zahm and Munger, 1983a,b) and young postnatal rodents (Yamasaki and Tohyama, 1985;Ozeki, 1987;Endo, 1988), and during regenerative periods of taste-bud development (e.g., rabbit: Fujimoto and Murray, 1970). In addition, axoaxonal synapses have been reported in guinea pig (Yoshie et al, 1990) and tortoise (Uchida, 1980) taste buds (ages not specified).…”

Histochemical changes and apoptosis in degenerating taste buds of the rat circumvallate papilla

“…The present analysis showed that ssDNA-immunoreactive cells also expressed NCAM immunoreactivity a marker of type III cells following gustatory denervation. In addition to the presence of synapse vesicles in type III cells, Yoshie et al (1990) reported the presence of synapse vesicles at the axon terminals of gustatory nerves forming reciprocal synapses. Thus, it is speculated that type III cells receive some molecules from the axon terminals of gustatory nerves.…”

“…Light cells are further divided into type II and type III cells based on the presence or absence of synaptic connections with gustatory nerves. Type III cells contain many synaptic vesicles and have synapses with gustatory nerves while type II cells do not (Murray et al, 1967(Murray et al, , 1969Takeda and Hoshino, 1975;Yoshie et al, 1990). Although type II cells do not have apparent synapses, both type II and type III cells are considered to act as taste receptor cells because of their histochemical properties.…”