Fig. 3.

Traveled distances (track paths) and instantaneous velocities [V (points/200 ms)] of mice during 2-m intervals before and following exposure to Cl₂. A: red lines, TDC covered within a 2-min period by a C57BL/6 mouse breathing air. Color dots represent instantaneous velocities during a 200-ms period according to the color scale on the right. The mouse was then exposed to Cl₂ (400 ppm for 30 m) and returned to room air. B: ∼5 m post Cl₂ exposure. After video tracking, the mouse received an intraperitoneal injection of saline (0.01 ml/g). C: 6 h post Cl₂ exposure. D: 9 h post Cl₂ exposure. E–H: same as in A–D but the mouse was injected with buprenorphine (0.05 mg/kg as described in materials and methods) immediately after F. Additional details are shown in materials and methods. Notice the much higher TDC post buprenorphine treatment.