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. Author manuscript; available in PMC: 2014 Feb 3.
Published in final edited form as: Chem Commun (Camb). 2012 Dec 20;49(10):947–965. doi: 10.1039/c2cc36577d

Fig. 11.

Fig. 11

(a) Positive ion nESI mass spectrum of a mixture of amino acids present in a solution of precipitated plasma, and (b) negative ion mass spectrum after charge inversion using anions generated from nESI of PAMAM generation 3.5. Reprinted with permission from ref. 78. Copyright 2011 American Chemical Society.