Immunohistochemical and ultrastructural study of the immune cell system and epithelial surfaces of the respiratory organs in the bimodally breathing African sharptooth catfish (Clarias gariepinus Burchell, 1822)

John Ndegwa Maina, Jose Manuel Icardo, Giacomo Zaccone, Marialuisa Aragona, Eugenia Rita Lauriano, Alessio Alesci, Marco Albano, Maria Cristina Guerrera, Antonino Germana, Jorge Manuel Oliveira Fernandes, Viswanath Kiron, Gioele Capillo