Figure 3. Growth of CHOZMD cell cultures beyond 24 hrs in spinner flasks with the four microcarriers, expressed in two ways: (a) number of anchored cells per mL of culture medium and (b) number of anchored cells per particle (microcarrier). Based on manufacturer information, the estimated number of particles per gram of each microcarrier was: 4.3 x 10⁶ particles/g for Cytodex 1, 8.0 x 10⁵ particles/g for Cultispher S, 8.6 x 10³ particles/g for Immobasil FS and 3.9 x 10⁵ particles/g for Pronectin F. Notice that the microcarriers are of different sizes as described in Table 1.