Fig. 3

Tissue culture medium from the tip of the tracheal tube in both groups. (A) Colonies were cultured from catheter tips of patients in NS group. (B) Colonies were cultured from catheter tips of patients in CH group.

Tissue culture medium from the tip of the tracheal tube in both groups. (A) Colonies were cultured from catheter tips of patients in NS group. (B) Colonies were cultured from catheter tips of patients in CH group.