Table 3. Descriptive parameters (mean ± SEM) for the two clusters obtained following two-step cluster analysis using all sperm samples collectively.
| PLCζ | Cluster 1 | Cluster 2 |
|---|---|---|
| N | 47 | 24 |
| % Sperm exhibiting PLCζ | 88.9 ± 1.2 | 36.9 ± 5.5 |
| Total levels of PLCζ | 37.2 ± 2.3 | 22.6 ± 2.6 |
| Localisation patterns (%) | ||
| A | 1.4 ± 0.4 | 2.4 ± 1.0 |
| PA | 7.4 ± 1.4 | 7.9 ± 1.9 |
| E | 29.3 ± 3.8 | 10.8 ± 2.9 |
| A + PA | 1.4 ± 0.5 | 1.3 ± 0.6 |
| A+ E | 3.5 ± 1.1 | 1.0 ± 0.4 |
| PA+ E | 29.9 ± 3.9 | 8.5 ± 1.8 |
| A + PA +E | 15.7 ± 2.6 | 10.6 ± 3.0 |
| None | 11.3 ± 1.1 | 52.7 ± 5.8 |
[Specific localisation patterns of PLCζ are referred to as: A = acrosomal; E = equatorial; None = absence of PLCζ; PA = post-acrosomal. ‘None’ refers to sperm that were completely devoid of PLCζ].