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Table 1 Epithelial characteristics used to evaluate uterine biopsies using SEM

From: A successful pregnancy following SEM fine tuning of hormonal priming

Epithelial Characteristics

Cycle 1

Cycle 2

Cycle 3

Epithelial abundance

+

+++

+++

Tissue inhomogeneity

+++

+++

+

Cell inhomogeneity

+++

++

+

Gland abundance

+++

++

+

Gland opening

+++

+++

+

Cilia groups

+

+

+++

Single cilium

+

++

+++

Microvilli height

++

+

+

Microvilli density

+++

+

+

Apical membrane defects

++

+++

+

Cell separation

+++

+++

+

Denuded apices

+

+++

+

Flattened cells

+++

++

+

Deflated cells

++

++

++

Apical protrusion

++

++

+++

Uterodome development

+++

+++

+++

Uterodome – abundance

+

+

++

Cell borders

++

++

+

Crevices

++

++

+++

Secretion

++

+

+++

  1. + = few, barely present, low, small, developing ++ = moderate, average, regressing +++ = abundant, large, wide, fully developed