Fig. 7. Intracellular degradation of endocytosed ¹²⁵I-labelled lipopolysaccharide ([¹²⁵I]LPS). Monolayer cultures of cod atrial endocardial cells in 2 cm² wells were incubated for 48 h with [¹²⁵I]LPS (approximately 2x10⁴ cts min^–1; 3 ng). Solubilised cultures were analysed by gel filtration on a PD-10 column. The ordinate indicates the percentage of total eluted radioactivity. The results are mean of six wells ± S.E.M. V_t, total volume.