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Re, Richard N. (April 2003). "The intracrine hypothesis and intracellular peptide hormone action". BioEssays. 25 (4): 401–409. doi:10.1002/bies.10248. PMID12655647.
Clarke MB, Sperandio V (June 2005). "Events at the host-microbial interface of the gastrointestinal tract III. Cell-to-cell signaling among microbial flora, host, and pathogens: there is a whole lot of talking going on". American Journal of Physiology. Gastrointestinal and Liver Physiology. 288 (6): G1105–9. doi:10.1152/ajpgi.00572.2004. PMID15890712.
Wettschureck N, Offermanns S (October 2005). "Mammalian G proteins and their cell type specific functions". Physiological Reviews. 85 (4): 1159–204. doi:10.1152/physrev.00003.2005. PMID16183910.
Dahlman-Wright K, Cavailles V, Fuqua SA, Jordan VC, Katzenellenbogen JA, Korach KS, Maggi A, Muramatsu M, Parker MG, Gustafsson JA (Dec 2006). "International Union of Pharmacology. LXIV. Estrogen receptors". Pharmacological Reviews. 58 (4): 773–81. doi:10.1124/pr.58.4.8. PMID17132854.
Lu NZ, Wardell SE, Burnstein KL, Defranco D, Fuller PJ, Giguere V, Hochberg RB, McKay L, Renoir JM, Weigel NL, Wilson EM, McDonnell DP, Cidlowski JA (Dec 2006). "International Union of Pharmacology. LXV. The pharmacology and classification of the nuclear receptor superfamily: glucocorticoid, mineralocorticoid, progesterone, and androgen receptors". Pharmacological Reviews. 58 (4): 782–97. doi:10.1124/pr.58.4.9. PMID17132855.