Table 3.

List of RNAscope probes.

Target marker	Target description	Species	Probe	Target region	Reference
Occludin (OCLN)	OCLN, transcript variant X4, mRNA	Equus caballus	Ec-OCLN-C1	314–1,312 of XM_023618240.1	1153761-C1
Claudin 1 (CLDN1)	CLDN1, mRNA	Equus caballus	Ec-CLDN1-C2	118–1,495 of XM_001500088.4	1153751-C2
Tight junction protein 1 (TJP1)	TJP1, transcript variant X7, mRNA	Equus caballus	Ec-TJP1-C3	307–1,283 of XM_023651568.1	1153741-C3

The probes utilized for RNA in situ hybridization were obtained from ACD Bio (Newark, CA).