Figure 1

Viability of tick cell lines after refrigeration. Viability of tick cell lines (a) BDE/CTVM14, (b) BME/CTVM6, (c) IRE/CTVM20 and (d) IDE8 after storage at 6°C for 15, 30 or 45 days. Symbols indicate when subcultures were carried out and data points are the mean of a minimum of three replicates (parent cultures and, where appropriate, subcultures) for each condition; error bars show standard deviations.