TEM characterization of hemocytes.

<p>Cells from the LL01 clone (A–D) and the YR2-Hd line (E). (A) Prohemocyte characterized by a round nucleus (<i>N</i>), a high N/C ratio, and homogenous cytoplasm devoid of apparent organelles. (B) Plasmatocyte with homogeneous cytoplasm, a lobulated nucleus, a high N/C ratio and some cytoplasmic organelles clearly visible in box (C): Rough Endoplasmic Reticulum (<i>RER</i>), Mitochondria (<i>M</i>). (D) Granulocyte with a lobulated nucleus, a low N/C ratio, and granules <i>(G)</i>. The cytoplasm contains numerous organelles (see box). A phagosome is observed that contains a large foreign particle (asterisk). (E) YR2-Hd spherulocyte with a round nucleus and a low N/C ratio. The large volume of cytoplasm is filled with spherules (<i>S</i>) of different sizes, and numerous mitochondria are found in a small region (enlarged box). <i>Ba</i>: <i>B. aphidicola</i>; <i>Hd</i>: <i>H. defensa</i>. Scale bar: 2 µm (A, B, D, E) and 0.5 µm (C).