International Journal of Molecular Sciences Article Essential Role of Growth Hormone and IGF-1 in Therapeutic Effect of Ghrelin in the Course of Acetic Acid-Induced Colitis Piotr Ceranowicz 1, Zygmunt Warzecha 1,*, Jakub Cieszkowski 1, Dagmara Ceranowicz 1,2, Beata Kus´nierz-Cabala 3, ...