Table 2 Parameters characterising the migration of hESC pairs, both in the absence and in the presence of Cell Tracer.

From: Dynamics of single human embryonic stem cells and their pairs: a quantitative analysis

Parameter and notation

 

No Cell Tracer

With Cell Tracer

Type A

Type B

Number of pairs

N

10

12

17

Tracking time (hr)

 

23

24.25

31.5

Initial separation (μm)

s 0

\({16}_{-1.5}^{+2.5}\)

\({17}_{-2.4}^{+5.7}\)

\({16}_{-2.4}^{+6.\,2}\)

Final separation (μm)

s f

\({91}_{-32.3}^{+81.9}\)

\({34}_{-14.2}^{+12.6}\)

\({19}_{-4.8}^{+4.3}\)

Maximum separation (μm)

s max

\({95}_{-14.2}^{+88.9}\)

\({98}_{-19.0}^{+52.1}\)

\({26}_{-5.0}^{+7.7}\)

Time to \({\bar{s}}_{{\rm{\max }}}\) (hr)

T max

\({17}_{-4.4}^{+2.6}\)

\({8}_{-3.9}^{+2.8}\)

\({4}_{-2.3}^{+5.3}\)

Speed of each cell (μm/hr)

v

\({20.0}_{-8.9}^{+13.37}\)

\({20.5}_{-8.1}^{+11.9}\)

\({15.4}_{-6.8}^{+7.2}\)

Pair centroid speed (μm/hr)

v pc

\({15.1}_{-6.1}^{+9.0}\)

\({16.2}_{-7.1}^{+8.8}\)

\({11.7}_{-4.8}^{+6.0}\)

Relative speed (μm/hr)

v r

\({31.1}_{-12.2}^{+17.1}\)

\({27.7}_{-11.8}^{+17.0}\)

\({16.3}_{-7.7}^{+10.9}\)

Pair centroid correlation time (hr)

Ï„

\({0.5}_{-0.3}^{+0.8}\)

—

—

Pair centroid diffusivity (μm2/hr)

D

58.5 ± 1.8

—

—

  1. We present the representative median values, and errors as their upper and lower quartiles. The diffusivity was obtained for Type A cells using the fit to \(\overline{{L}^{2}}\) shown in Figure S7a and the correlation time from τ = 2D/v 2 for instantaneous speeds.