This is the paper. yes it is an in vitro experiment.
The concentrations
tested were those used in literature, which varied from 20
ug/mL to 80ug/mL. Figure 1 shows that lactoferrin, at a
concentration of 80 ug/mL, was the most effective and
decreased the viability of B. burgdorferi biofilm by 15%
compared to the untreated sample. Comparing to positive
control, lactoferrin was ~5% more effective than
doxycycline, which is a compound commonly used in
hospitals for treatment of Lyme disease. Interestingly,
lactoferrin at lower concentrations, such as 20ug/mL and
40ug/mL, increased B. burgdorferi biofilm viability
compared to the untreated control, however the effects were
not significant.https://www.newhaven.edu/_resources/documents/academics/surf/past-projects/2014/dylan-haenel-paper.pdffibrinolytic enzymes is a good idea. thank you both!