mast cells in normal human flank skin occupied a relatively small percentage of the dermal volume , with a mean value of 0.40 % ( +/- 0.14 sd ) , while a marked increase in mast cell content was demonstrated in cutaneous lesional tissue from two patients with the macular and nodular forms of mastocytosis ( 2.5 % and 64.3 % , respectively ) .
C0024880
mast cell
C0024899
mastocytosis