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. 2020 Feb 6;13:50. doi: 10.1186/s13071-020-3907-8

Fig. 2.

Fig. 2

Light micrographs of Onchocerca borneensis n. sp. (a and b), O. dewittei dewittei (c and e) and O. d. japonica (d). a Longitudinal section of female at midbody: transverse cuticular ridges, triangular or trapezoid in shape (arrows; height and width, dark lines) and absence of internal striae at mid-line (arrowhead) (HE staining). b Short longitudinal cuticular crests (arrow) of male at midbody. c Longitudinal section of female at midbody: triangular transverse cuticular ridges (arrows; height and width, dark lines) and absence of internal striae (arrowhead) at mid-line (dotted line) (HE staining). d Longitudinal section of female at midbody: large triangular transverse cuticular ridges (arrows; height and width, dark lines), showing long distance between adjacent ridges (HE staining). e Transverse section of female with Wolbachia immunostaining. Dark red dots in ovaries and uterus (arrows) are Wolbachia. Lateral chords (*), muscles (m) and cuticle (c). Scale-bars are in micrometres