Table 1.

Quantitative Scoring of the % of Colonies Containing Type I Collagen, Type II Collagen, Chondroitin Sulfate or Keratan Sulfate^*

	Type I Collagen	Type II Collagen	Chondroitin	Keratan Sulfate
			Sulfate
Passage 1	93.9 ± 3.7	86.2 ± 1.7	90.0 ± 3.8	80.9 ± 7.0
Passage 2	96.7 ± 1.0	85.1 ± 3.0	87.3 ± 2.1	83.5 ± 2.6
Passage 3	98.1 ± 0.6	88.5 ± 2.3	91.6 ± 3.9	85.1 ± 3.0
Passage 4	97.4 ± 0.5	85.2 ± 1.6	96.2 ± 1.1	87.2 ± 2.3

^*Data are mean ± s.e.m. for colonies scored for the presence of the specific ECM component. Data are based on a mean of 240 colonies scored on each subject's cells cultured for each passage; cells from five individuals were evaluated.