發送短信 : Surface modification of smooth poly (L-lactic acid) films for gelatin immobilization

             ___      ______     ___              
    ___     / _ \\   /_   _//   / _ \\      ___   
   /   ||  / //\ \\  `-| |,-   | / \ ||    /   || 
  | [] || |  ___  ||   | ||    | \_/ ||   | [] || 
   \__ || |_||  |_||   |_||     \___//     \__ || 
    -|_|| `-`   `-`    `-`'     `---`       -|_|| 
     `-`                                     `-`