http://www.epa.gov/oppbppd1/biopesticides/pips/bt_brad2/2-id_health.pdf
引用：
Protein Characterization and Expression
The results of the western blot showed the trypsinized extracts of corn lines MON 802, 805, 809, 810, 813, and 814 expressed proteins that comigrated with the Cry1Ab protein as found in MON 801 and the same Cry1Ab protein purified from E. coli. These bands also reacted with antiserum #B6 specific for the tryptic core protein of Cry1Ab. These results indicate the trypsinized proteins found in all these plants were of same molecular size (63 kD) and immunoreactivity with the reference standards of Cry1Ab expressed in E. coli and corn line MON801. CLASSIFICATION: ACCEPTABLE
可能這能讓你對BT作物中BT蛋白的測試有個更直觀的認識。USDA和EPA對被批準的轉基因作物“實質相同”的論斷不是輕易做出的，特別是對轉入基因的蛋白質表達是很仔細的。絕對不是象你轉貼作者說的那樣“隻檢測傳統食物中那些已知營養物和反營養物有沒有變化”。
至於你舉的工業酒精的例子，我沒法具體回答，因為我不懂其中的細節。就拿我比較熟悉的說，我對經過嚴格檢驗的人工合成的維生素和其他藥品完全可以接受，不一定要追求“天然提取”。
我又要舉人工選種的例子了，經過自然或誘導基因突變的作物跟轉基因技術的確定性比起來怎麽樣？審核的嚴格性相比又怎麽樣呢？
