1. And Still It Moves (E Pur Si Muove)
Cell 
Volume 98, Issue 6, Pages (September 1999)
DOI: /S (00)

2. Figure 1 Cell Behavior and Animal Behavior
(A) Macrophage lurking at the opening of a 5 μm–diameter pit on a silica surface (from A. Curtis and C. Wilkinson, p. 19). In populations of macrophages cultured on a surface with microscopic pits, essentially every cell will crawl inside a pit. This complex cellular behavior is reminiscent of the well-characterized tendency of cephalopods to crawl inside of pots and jars.
(B) Octopus vulgaris lurking at the opening of a piece of PVC pipe (from J. W. Forsythe,
Cell  , DOI: ( /S (00) )