the crystals with more irregular surfaces and protruding oxygen atoms , which form surface pockets ( quartz , tridymite , and cristobalite ) , showed a dramatic increase over saline controls for lung index ( greater than 2 x ) , cell number and lavage protein concentration ( greater than 4 x ) , and hydroxyproline level ( greater than 2 x ) .
C0034387
quartz
C0037098
cristobalite