Post invasion development of Heterodera fici on Ficus carica roots. A Second stage juvenile within cortical layer, oriented in parallel position to the root axis B Newly formed cyst with gelatinous egg sac C Male inside 4th stage cuticle D Different sized syncytia (S) induced by female (the larger one), and by male. Abbreviations: j = juvenile; m = male; c = cyst; hn = hypertrophied nuclei. Scale bars: 50 µm (A, C); 200 µm (B); 100 µm (D).