You just read the abstract and didn't read the full paper.

There were control groups.

> Methods:

> [administration] as follows: (i) BPC 157 10 mg or 10 ng/kg or saline 5.0 ml/kg (controls), intraperitoneally, or (ii) BPC 157 in neutral cream (1.0 mg dissolved in distilled water/g commercial neutral cream) or commercial neutral cream (controls), as a thin layer, locally, at the site of injury, administered once daily with the first application 30 min after surgery and the final application 24 h before sacrifice; (iii) BPC 157 0.16 mg/ml or nothing (controls) in the drinking water (12 ml/day/rat) until sacrifice.

There was a big difference vs. the control groups.