Table 1.

Percentage area of repair tissue stained immunopositively for antibodies against collagen types I, II or procollagen IIA.

Collagen	All samples	ACI alone	ACI + mosaicplasty	‘Control’ cartilage
I	90.9 ± 22.3 (65)	90.9 ± 23.9 (55)	89.8 ± 23.3 (10)	1.7 ± 0.8 (8)
II	60.0 ± 31.3 (65)	56.8 ± 33.8 (55)	72.8 ± 24.0 (10)	100 ± 0.1 (8)
Procollagen IIA	45.5 ± 35.5 (54)	44.4 ± 37.1 (46)	47.0 ± 27.5 (8)	1.2 ± 0.4 (5)

Results are means ± standard deviation with number of samples analysed in parentheses.