title: Increase in diameter of muscle fibres in the foetal pig.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D005865:Gestational Age; D009132:Muscles / Q000196:embryology*; D009210:Myofibrils; D013194:Staining and Labeling; D013552:Swine / Q000196:embryology*