Table 2.

Description of antibodies used for IHC

Antibody	Gene alias	Dilution used	Catalog number	Manufacturer
Clara cell secretory protein rabbit anti-human polyclonal antibody	CCSP	1:4000	RD181022220	BioVendor (Chandler, NC)
α-CGRP rabbit anti-canine, anti-mouse, and anti-rat polyclonal antibody	CGRP	1:5000 with antigen retrieval	S-4001	Bachem Americas (Torrance, CA)
UGRP2 (M-14) goat anti-mouse polyclonal antibody	UGRP2	1:300	sc-49566	Santa Cruz, Biotechnology (Santa Cruz, CA)
Anti-surfactant protein A rabbit anti-human polyclonal antibody	SP-A	1:2000 with antigen retrieval	AB3420	Millipore (Billerica, MA)
Prosurfactant protein C rabbit anti-human polyclonal antibody	SP-C	1:2000	AB28744	Abcam (Cambridge, MA)