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Table 2 Upper limits for the combined thickness of the uterus and placenta (CTUP) by transrectal ultrasonography during late gestation (adapted from Renaudin et al., 1997)

From: Ascending placentitis in the mare: A review

Day of gestation

Normal CTUP (mm)

151-270

<7

271-300

<8

301-330

<10

331+

<12