passages.id: split_8_test_2502_passage
passages.type: progene_text
passages.text: At 3 , 7 , 14 , 28 , and 42 d of treatment , four pigs per dose were harvested and white ( WST ) and red ( RST ) semitendinosus and longissimus ( LM ) muscles were removed and processed , and myosin heavy chain was quantified by ELISA .