papilla


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to papilla: basilar papilla, dermal papilla

papilla

1. the small projection of tissue at the base of a hair, tooth, or feather
2. any other similar protuberance
3. any minute blunt hair or process occurring in plants

papilla

[pə′pil·ə]
(biology)
A small, nipplelike eminence.
References in periodicals archive ?
Human Hair Dermal Papilla Cells(HHDPC) are isolated from dermal papilla of human hair follicles.
VEGF induces proliferation of human hair follicle dermal papilla cells through VEGFR-2mediated activation of ERK.
bombylios Larson and Hoese, 1997, in general appearance, having reduced eyes, moderate gill opening and with some raised sensory papilla rows on the head, but differing in having a number of fin rays in the lower half of the pectoral-fin free from connecting membranes, resembling the rays of a polynemid, no scales on the cheek or opercle, as well as a sensory papilla arrangement that is unlike other species of Egglestonichthys.
16) This is more important and relevant when surgeons attempt to remove tissue from within the nipple papilla during NSM, although how thoroughly ductal tissue is removed from the nipple by using current techniques is not known.
The data, mean colony and hyphal diameter, length and breadth of sporangia, length of papilla, mean lesion diameter and length, was subjected to analysis of variance (ANOVA) using Statistical Package for Social Sciences (SPSS) computer software (version 15.
Architecturally, IPMNs have a spectrum of cyst and papilla formation ranging from predominantly cystic or exclusively papillary.
In male and female red tilapias, sexual characteristics can be differentiated by the shape of the body and relative position of the genital papilla.
40) When examined with high resolution digital endoscopic imaging, the renal papilla in all such patients were noted to have sites of plaques which were manifested as whitish calcifications located at the papillary tip just as Randall initially described (Fig.
An earlier work by Pender et al (19) did not describe any paravascular location but identified two distinct progenitor connective tissue cell populations in the rat gingiva; one population was located in the mid papilla region and the other close to the epithelial attachment and cementum.
The cuticular papillae comprise the outer lateral wall of the atrium, each papilla bordering the next without a gap and projecting upwards from coxae I (Figs.
Crisci (1974a) performed a careful study in all genera of Nassauviinae and determined four style types according to differences in branch length, apex shape, and papilla length and considered the papillae in the styles of Nassauvieae as "collector hairs.
What is special about Trigger is that it directly targets the root of the hair by penetrating into the pore and activating the hair papilla.