Figure 5.

(A) Aspect ratio of adherent macrophages on poly (ethylene imine) (PEI) and terminal layers of PEMs composed of either hyaluronic acid (HA) or heparin (Hep) as polyanions and chitosan (Chi) as polycation abbreviated as (PEI(HA/Chi)₄HA, PEI(Hep/Chi)₄Hep), respectively. (B) Cell area of adherent macrophages per surface area after 24 h of cultivation. The box plot indicates the 25th and 75th percentile; the lowest and highest values are represented by the whiskers, whereas the median (dash) and mean value (white circle) are shown as well. n = 15, * p ≤ 0.05.