Table 4

Similarity matrix of the terminal bulb worm aging
Similarity Matrix

day 0
 day 2
 day 4
 day 6
 day 8
 day 10
 day 12
day 0
 1.00
 0.66
 0.63
 0.59
 0.63
 0.55
 0.58
day 2
 0.68
 1.00
 1.00
 0.99
 0.95
 0.76
 0.65
day 4
 0.64
 0.93
 1.00
 1.00
 0.97
 0.82
 0.71
day 6
 0.55
 0.84
 0.96
 1.00
 1.00
 0.89
 0.75
day 8
 0.55
 0.77
 0.89
 0.93
 1.00
 0.84
 0.71
day 10
 0.53
 0.52
 0.70
 0.63
 0.77
 1.00
 0.98
day 12
 0.49
 0.48
 0.65
 0.58
 0.68
 0.94
 1.00

Each class consists of microscopy images of the terminal bulb of C. elegans nematodes taken at ages 0, 2, 4, 6, 8, 10, 12 days. As the table shows, the similarity values are higher for neighboring age groups. The dataset can be downloaded at http://ome.grc.nia.nih.gov/iicbu2008/terminalbulb.tar.gz.

Shamir et al. Source Code for Biology and Medicine 2008 3:13   doi:10.1186/1751-0473-3-13