“…The lack of fibrosis is possibly due to the anti-inflammatory properties of MSCs. The obtained in vivo data on the application of PL-PC are in line with previously published studies (Sartoneva et al, 2011;Sartoneva et al, 2018). Urothelium thickness 46,7 ± 24, 35,0 ± 2,0 a 32,0 ± 2,2 a 43,0 ± 3,5 a 40,0 ± 5,4 a 45,0 ± 3,5 a 41,0 ± 2,5 a Submucosal layer thickness 276,7 ± 1 3,2 616,7 ± 62,6 a 466,7 ± 23,7 a 346,7 ± 33,4 a 366,1 ± 23,7 a 286,7 ± 32,6 a 306,7 ± 42,3 a Muscular layer thickness 2666,7 ± 170,6 2266,4 ± 145, 3 a 2216,7 ± 11 2,9 a 2533,3 ± 62,6 a 2352,3 ± 42,8 a 2566,9 ± 155, 2 a 2622,4 ± 141,7 a Diameter of microvessels in the submucosal layer 28,3 ± 2, 4 32,0 ± 2,5 a 48,3 ± 1,2 a 30,0 ± 5,4 a 40,0 ± 3,4 a 28,6 ± 3,6 a 34,0 ± 3,7 a Microvessel quantity in the submucosal layer/1 mm 2 10,3 ± 0, 2 9,0 ± 0,4 17,3 ± 0,2 a 8,0 ± 0,8 14,0 ± 0,8 a 10,0 ± 0,4 12,0 ± 0,4 a…”