in vivo , the polychlorinated biphenyl ( pcb ) metabolite 4,4'-bis ( methylsulphonyl ) -2,2',5,5'- tetrachlorobiphenyl -- ( meso2 ) 2tcb -- selectively accumulates in the clara cells of the bronchiolar epithelium and in the secretory contents of the bronchiolar lumen .
C0225668
clara cells of
C0014609
epithelium