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|  __ \\    / _ \\   /_   _//  |  ___||   ____    
| |  \ ||  / //\ \\  `-| |,-   | ||__    |    \\  
| |__/ || |  ___  ||   | ||    | ||__    | [] ||  
|_____//  |_||  |_||   |_||    |_____||  |  __//  
 -----`   `-`   `-`    `-`'    `-----`   |_|`-`   
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Text this: A rocket-like encapsulation and delivery system with two-stage booster layers : pH-responsive poly(methacrylic acid)/poly(ethylene glycol) complex-coated hollow silica vesicles