Figure 2
From: Spinal afferent neurons projecting to the rat lung and pleura express acid sensitive channels
Distribution of retrogradely labelled DRG neurons after tracer injection into the pleural cavity. Segmental level "0" depicts that level at which the thorax was opened for tracer application (Th4: n = 1; Th5: n = 2, Th6: n = 2), level "-1" designates the DRG located immediately cranial, level "1" designates the DRG located immediately caudal to this level. Relative frequencies are shown, total number of neurons = 160, taken from 4 animals. Data from animal #4 are excluded since in this experiment DRG Th5 (left side) was lost during tissue processing (cf. Table 1).