U.S. Patent  May 12, 2020  Sheet 20 of 23  US 10,648,917 B2  FIG.19  100%  i:= 95%  - "’  ::z::  ~  ::: 90%  ’-.I  ::z::  L.1..1  ’-.I  "’  ~  85%  ::,  ....I  u..  C  L.1..1  ~  80%  i  C)  ::z::  75%  70%  0  ~  LS.~  0  0  ~  rc,%9:iw__~~o<&~~c9~0=,<D  o  c9  ~~  0  o  oo  oo  ~o  ~~~~~  l9’  t~,~o  •  CA-CYSTEINE  cr>’?~G&!P~  2000  a  CA-CYSTEINE IN SULFURIC ACID  o CA-M-SERINE  o CA-CYSTEAMINE  ~  FLUORESCEINE  o RHODAMINE B  4000  6000  TIME(S)  8000  10000 