Fig. 1From: Ring chromosome 18 in combination with 18q12.1 (DTNA) interstitial microdeletion in a patient with multiple congenital defectsStandard cytogenetic analysis of the patient. GTG-banded karyotype showing the presence of ring chromosome 18 (karyotype 46, XY, 18(r)). Red arrow points to the ring chromosome (mar: marker)Back to article page