From Wiktionary, the free dictionary
From trans- + choroidal.
transchoroidal (not comparable)
- Across or through the choroid
2016 March 5, “T-Lymphocytes Traffic into the Brain across the Blood-CSF Barrier: Evidence Using a Reconstituted Choroid Plexus Epithelium”, in PLOS ONE[1], →DOI:In accord with their transchoroidal route of migration, T cells are present in the choroid plexus stroma.