Can every cell process each of the four taste stimuli, or does each cell specialize in a particular taste?
These epigenetic states and their consequent transcriptional programs engendered in each cell are acquired throughout development as each cell specializes, concomitantly sacrificing its developmental potential.
Having two cell types permits a division of labour; the fibres serve a largely mechanical function, and the vessel elements are wide, hollow cells specialized for water conduction.
It plays a central role in the synthesis and export of proteins and glycoproteins and is best studied in the secretory cells specialized in these functions.
Some plant-feeding insects that feed on only one or a few closely related plant species have taste receptor cells specialized to perceive chemicals specific to the host.
Nervous system, organized group of cells specialized for the conduction of electrochemical stimuli from sensory receptors through a network to the site at which a response occurs.
The synovial membrane, which lines joint capsules, is composed of loose vascular connective tissue but has cells specialized for secretion of the viscous synovial fluid, which is rich in hyaluronic acid, and for phagocytic functions.
The adaptive immune responses of mammals depend on cells specialized in the acquisition of antigen (Ag), called Ag presenting cells (APC), and cells that respond to that Ag, T and B lymphocytes.
