Positive α7 nAChR in the wall of pulmonary vessels (see arrows). One of the two vessels shown in A) is represented at higher magnification in B) – SIUDS case, 38 gestational weeks. α7 nAChR immunostain; magnification: A) 10×; B) 40×.
Lavezzi et al. BMC Pulmonary Medicine 2014 14:11 doi:10.1186/1471-2466-14-11