# Is cell-free DNA and protein-based science biology or chemistry? # Is cell-free DNA and protein-based science biology or chemistry <!-- #questions --> [Web URL for this note](http://notes.benjaminreinhardt.com/Is+cell-free+DNA+and+protein-based+science+biology+or+chemistry) [Comment on this note](http://via.hypothes.is/http://notes.benjaminreinhardt.com/Is+cell-free+DNA+and+protein-based+science+biology+or+chemistry) <!-- {BearID:6E55739B-514F-47EF-9A78-9C9968C46BFB-9440-00012BE726F4E5EC} -->