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. Author manuscript; available in PMC: 2013 Jun 1.
Published in final edited form as: Ann N Y Acad Sci. 2012 Jun;1257(1):167–174. doi: 10.1111/j.1749-6632.2012.06545.x

Table 1.

Alveolar epithelial claudin expression

Human Fetal77, 78 Human Adult42, 69, 79 Rat Type II31, 32, 65 Rat Type I31–33, 65 Mouse Type II44, 80
Claudin-3 RP* P RP# RP# P
Claudin-4 RP P RP RP P
Claudin-18 RP P RP RP P
Claudin-5 RP P RP RP P
Claudin-7 RP RP RP P
Claudin-10b R R R P
Claudin-12 R RP
Claudin-15 R RP
Claudin-19 R R
*

R = mRNA expression detected; P = protein expression detected

#

Rat type II cells express ~17-fold more cldn-3 than type I cells, cldn-4 and cldn-18 expression is comparable.31, 32, 65

Other claudin mRNAs expressed by rat alveolar epithelial cells: cldn-9, cldn-11, cldn-20, cldn-22, and cldn-23 (Ref 31).