Table 1. Percentages of structural chromosome abnormalities in spermatozoa from 10 healthy donors in each group of age.

Donor	Age	% Duplications	% Deletions	% Total structural
C3	24	2.9	1.5	4.4
C4	25	3.5	1.1	4.6
C5	37	3.1	1.3	4.4
C8	23	2.9	1.7	4.6
C9	30	4.2	2.5	6.7
Mean (SEM)	28	3.3 (0.25)	1.6 (0.2)	4.9 (0.4)
C1	74	3.5	1.0	4.5
C2	64	4.4	2.7	7.1
C6	72	5.3	2.4	7.7
C7	60	3.7	2.4	6,1
C10	62	5.7	1.9	7.6
Mean (SEM)	66	4.5 (0.4)	2.1 (0.3)	6.6 (0.6)