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Table 2 Spearman correlation coefficients between three seminal proteins with any post-freezing sperm variables (correlation coefficients/probability value)

From: Relationship between HSP90a, NPC2 and L-PGDS proteins to boar semen freezability

Time of incubation Proteins Membrane structural integrity Membrane functional integrity Acrosome integrity Progressive motility Total motility Percentage of functionally competent sperm
0 h HSP90a 0.51 0.08 0.21 0.50 –0.15 0.62 0.28 0.36 0.22 0.48 0.08 0.79
NPC2 19 kDa –0.44 0.15 0.02 0.93 0.27 0.38 –0.11 0.72 –0.01 0.96 0.20 0.52
NPC2 16 kDa –0.50 0.09 0.09 0.75 0.04 0.89 –0.24 0.45 0.02 0.93 0.21 0.50
L-PGDS –0.10 0.73 0.27 0.37 –0.13 0.68 –0.22 0.48 –0.20 0.51 –0.10 0.95
3 h HSP90a –0.33 0.29 0.34 0.26 –0.47 0.12 –0.64 0.02 –0.54 0.06 –0.21 0.50
NPC2 19 kDa –0.16 0.59 0.05 0.86 0.01 0.96 –0.10 0.74 –0.12 0.69 –0.10 0.75
NPC2 16 kDa –0.14 0.66 0.39 0.19 –0.18 0.55 –0.26 0.40 –0.07 0.81 0.15 0.64
L–PGDS –0.05 0.87 –0.42 0.16 0.43 0.15 0.04 0.89 0.29 0.34 0.31 0.32
  1. HSP90a Heat shock protein 90 alpha, NPC2 Niemann-Pick disease type C2 protein, L-PGDS Lipocalin-type prostaglandin D synthase