Range: ±23% μm/min
||Mammalian tissue culture cell
||Hartmann-Petersen R, Walmod PS, Berezin A, Berezin V, Bock E. Individual cell motility studied by time-lapse video recording: influence of experimental conditions. Cytometry. 2000 Aug 1 40(4):260-70. p.263 right column 2nd paragraphPubMed ID10918277
recording. "Unless otherwise indicated, subconfluent cells were seeded in six-well tissue culture plates." "For experiments requiring coating with fibronectin,
35-mm diameter wells in six-well tissue culture plates (Nunc,
Roskilde, Denmark) were incubated with 0.1–100 mg/ml
fibronectin..." "Tissue culture plates were placed on the stage of a
Nikon Diaphot 300 inverted microscope equipped with
phase-contrast optics..." For determination of individual cell motility, the position
of the center of the nucleus of individual cells in
consecutive video fields was semiautomatically marked using the PRIMA image processing software (Protein Laboratory)." "Based on the length of the individual cell
tracks, the mean cell speed of cells was calculated.
The calculation of the mean cell speed is based on the
most simple way of estimating speed, namely, to divide
the displacement, ?d, of an object by the time interval, ?t,
within which the displacement takes place."
||"pH and temperature
of the medium most profoundly influenced cell
motility and morphology. Thus, the mean cell speed was
40% lower at pH 7.25 than at pH 7.6 at 29°C, it was
approximately four times lower than at 39°C." "In order to determine the day-to-day (or interassay) variation for determination of S10 of L929 cells, 17 recordings performed at standard conditions at different experimental days were compared. The mean value of S10 ± the coefficient of variance for the 17 determinations was 0.488µm/min ± 23%, emphasizing the requirement for internal controls when performing recordings of cell motility."