title: Simultaneous immunostaining method for localization of bromodeoxyuridine and calcitonin gene-related peptide.
abstract: A new simultaneous double immunostaining method has been optimized to localize the DNA synthesis marker bromodeoxyuridine (BrdU) and calcitonin gene-related peptide (CGRP) in endocrine cells of Bouin's-fixed, paraffin-embedded rat lung. Nuclease pre-treatment before immunostaining is compatible with optimal tissue morphology and CGRP antigenicity preservation. Nickel-enhanced development of avidin-biotin-peroxidase staining is used to show CGRP immunoreactivity in black and alkaline phosphatase-anti-alkaline phosphatase is applied to demonstrate incorporated BrdU in red. The present methodology could be useful for studies requiring detection of incorporated BrdU in cells producing regulatory peptides or other labile antigens.
authors.affiliation: Department of Histochemistry, Royal Postgraduate Medical School, London, United Kingdom.
authors.forename: L M
authors.initials: LM
authors.lastname: Montuenga
authors.forename: D R
authors.initials: DR
authors.lastname: Springall
authors.forename: J
authors.initials: J
authors.lastname: Gaer
authors.forename: J T
authors.initials: JT
authors.lastname: McBride
authors.forename: J M
authors.initials: JM
authors.lastname: Polak
mesh_terms: D000818:Animals; D001973:Bromodeoxyuridine / Q000032:analysis*; D015740:Calcitonin Gene-Related Peptide / Q000032:analysis*; D002467:Cell Nucleus / Q000737:chemistry; D007124:Immunoenzyme Techniques; D008168:Lung / Q000737:chemistry* / Q000166:cytology; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D013047:Specific Pathogen-Free Organisms; D013194:Staining and Labeling
chemical_list: D001973:Bromodeoxyuridine; D015740:Calcitonin Gene-Related Peptide