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Table 1 Comparison of TIMP-1, MMP-2/TIMP2 and MMP-9 in maternal serum

From: The serum levels of circulating matrix metalloproteinase MMP-9, MMP-2/TIMP-2 complex and TIMP-1 do not change significantly during normal pregnancy: a pilot study

Protein n Pregnancy week 10 (n = 18) Pregnancy weeks 15–16 (n = 31) Pregnancy weeks 26–28 (n = 27) Pregnancy weeks 36–37 (n = 24)
TIMP-1 33 212 (204–313) 240 (164–288) 208 (151–269) 196 (85–291)
MMP-2-TIMP-2 33 199 (106–269) 191 (89–235) 204 (102–246) 233 (110–329)
MMP-9 34 19 (14–26) 15 (8–26) 14 (6–42) 14 (8–64)
  1. Results are expressed as median (range) (ng/ml)