TABLE 2.

Factors engaged in MC development.

R (examination at RNA level), P (examination at protein level), A (activity). Patterning of the mandibular arch – grey, proliferation of precursors and chondroblastic commitment – pink, chondroblastic differentiation and hypertrophy – purple, factors of extracellular matrix – green, factors involved in matrix degradation – yellow, factors of cells death – light blue.