PMC:7796291 / 20107-20277 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T164","span":{"begin":0,"end":170},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"To examine whether UV-treated or detergent-laundered respirators changed their chemistry, contact angles and FTIR spectra from those surfaces were examined (Figure 4B,C)."}