vibrissa follicle morphology trait vibrissa follicle molecular composition trait whisker follicle molecular composition trait caripark 2024-04-01T08:49:04Z VT:0011103 Trait.ontology Any measurable or observable characteristic related to the proportions of proteins, minerals, nutrients, gases, or other substances in the tubular invaginations of the epidermis enclosing the hair roots and from which grow the vibrissae located on the muzzle and face of many species.