發送短信 : Sulfonation of papain-treated chitosan and its mechanism for anticoagulant activity

 __   __    _____     ______    _____     _  __  
 \ \\/ //  |  ___||  /_   _//  |  ___||  | |/ // 
  \   //   | ||__      | ||    | ||__    | ' //  
  / . \\   | ||__     _| ||    | ||__    | . \\  
 /_//\_\\  |_____||  /__//     |_____||  |_|\_\\ 
 `-`  --`  `-----`   `--`      `-----`   `-` --`