Figure 1

Phagocytosis of the pathogens by the haemocytes. Pathogens were injected into the haemocoel (1× 10⁵ cfu/larva) of H. armigera for 3 h and then haemocytes were collected and examined under the microscope. A, a, Haemocytes from normal larvae; B, b, Haemocytes from the larvae of B. thuringiensis injection, C, c, Haemocytes from the larvae of K. pneumoniae injection, D, d, Haemocytes from the larvae of C. albicans injection. The capital characters A, B, C, and D are the pictures under white light. The small characters a, b, c, and d are the pictures under fluorescent light. The rule is 20 μm. Pl, plasmatocytes; Gr, granulocytes; Oe, oenocytoids; Sp, spherulocytes.