[50202] Collagen Type I, rat tail, 5 mg/ml, 4 x 5 ml [50203] Collagen Type I, rat tail, 5 mg/ml, 1 x 100 ml [50204] Collagen Type I, rat tail, 10 mg/ml, 1 x 5 ml [50205] Collagen Type I, rat tail, 10 mg/ml, 4 x 5 ml [50206] Collagen Type I, rat tail, 10 mg/ml, 1 x 100 m