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Table 2 Proportion of the "common" deletion in 45% and 90% percoll fraction of semen samples

From: Correlation of the 4977 bp mitochondrial DNA deletion with human sperm dysfunction

     Proportion of deletionb
Percoll fraction Sperm classificationa   Number of samples 10% – 1% 1% – 0.1% <0.1% 0%c
    31 1 (3.22%) 8 (25.81%) 3(9.68%) 19 (61.29%)
  Defected A 10 5 (50%) 1 (10%) 0 (0%) 4 (40%)
   A 11 2 (18.18%) 4 (36.36%) 0 (0%) 5 (45.45%)
   T 5 0 (0%) 1 (20%) 0 (0%) 4 (80%)
   AT 20 8 (40%) 3 (15%) 0 (0%) 9 (45%)
   OA 7 2 (28.57%) 2 (28.57%) 0 (0%) 3 (42.85%)
   OT 5 0 (0%) 1 (20%) 1 (20%) 3 (60%)
   OAT 25 12 (48%) 2 (8%) 2 (8%) 9 (36%)
   Total 83 29 (34.93%) 14 (16.86%) 3 (3.61%) 37 (44.58%)
  Total   114 30 (26.32%) 22 (19.3%) 6(5.26%) 56 (49.12%)
90% Normal   28 0 (0%) 4 (14.29%) 3 (10.71%) 21 (75%)
  Defected A 7 1 (14.28%) 0 (0%) 0 (0%) 6 (85.71%)
   T 7 0 (0%) 2 (28.57%) 0 (0%) 5 (71.42%)
   O 0 - - - -
   AT 11 1 (9.09%) 1 (9.09%) 0 (0%) 9 (81.81%)
   OA 2 0 (0%) 1 (50%) 0 (0%) 1 (50%)
   OT 0 - - - -
   OAT 12 3 (25%) 0 (0%) 0 (0%) 9 (75%)
   Total 39 5 (12.82%) 4 (10.25%) 0 (0%) 30 (76.92%)
  Total   67 5 (7.46%) 8 (11.94%) 3 (4.48%) 51 (76.12%)
  1. a A, Asthenozoospermic; T, Teratozoospermic; O, Oligozoospermic; AT: Asthenoteratozoospermic; OA: Oligoasthenozoospermic; OT: Oligoteratozoospermic; OAT: Oligoastenoteratozoospermic
  2. b Determined according to supplementary Table 2 [see Additional file].
  3. c No deletion-specific product was detected, or the detected deletion-specific product represents pseudo-deletion (Id/In ≤ 0.0013).
  4. Samples were categorized in two groups based on their sperm parameters. "normal" group includes samples with normal parameters while "defected" group samples with at least one abnormal parameter (according to WHO criteria).