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Table 1 Information on the bovine corpus luteum used for the present study

From: Histological analysis of arteriovenous anastomosis-like vessels established in the corpus luteum of cows during luteolysis

A: Normal cycling CL
  Luteal stages
   EL ML LL Reg
Number of samples For the histological analysis 7 13 14 31
For the qPCR analysis 4 4 5 7
Days after ovulation 2–3 8–12 15–17 >19
Color Flesh, Bloody Orange Yellow Ocher, Brown, White
Size (cm) 1.9 ± 0.19 2.5 ± 0.07 2.1 ± 0.14 0.9 ± 0.06
B: PGF-induced regressing CL
   Hours after the PGF injection
   0 2 12 24
Number of samples For the histological analysis 4 10 6 3
For the qPCR analysis 5 6 6 4
  1. EL early-luteal, ML mid-luteal, LL late-luteal, Reg regressed