Fig. 3. Accumulation of newly synthesized hydrocarbons (HCs) in the ovary in vitro. An ovary from a day 4 female was co-incubated with abdominal sternites 3 and 4 from a day 5 female in 500 µl of TC199 medium containing 25.9 kBq of [1-¹⁴C]propionate and 0–50 % Blattella germanica plasma. Values are means ±1 S.E.M. (N=3–5). Some error bars are obscured by the symbol.