Fig. 1
From: Sperm chromosomal abnormalities in infertile men with failed intracytoplasmic sperm injection (ICSI)
Sperm FISH images using dual color probes for chromosomes 13 and 21 showing a Normal spermatozoa with one green signal for chromosome 13 and one red signal for chromosome 21. b Abnormal spermatozoa with one red signal for chromosome 21 and no green signal for chromosome 13 (nullisomy 13). c Abnormal spermatozoa with one green signal for chromosome13 and no red signal for chromosome 21 (nullisomy 21). d Abnormal spermatozoa with no green or red signals for both chromosome13 and chromosome 21 respectively (nullisomy13 and 21)