Also known as a bradyzoic merozoite. Also known as a tachyzoic merozoite (same journal reference as for "bradyzoic merozoite", above). It divides, becoming a new form, known as a merozoite. Each nucleus develops into a merozoite. MSP-1 is synthesized at the very beginning of schizogony, or asexual merozoite reproduction. Blocking antibodies have a variety of functions on the merozoite form of parasitic malaria. The ELISAs are based on the "S. neurona" merozoite surface antigens (SnSAGs). While in the merozoite form, malaria parasites invade erythrocytes and reproduce in them. Before schizogony, the merozoite is also known as the schizozoite. The merozoite first attaches to a red blood cell using its MSP-1 complex. Eventually, a merozoite becomes a male microgamecyte and asexually reproduces in epithelial cells. In the erythrocyte the merozoite form a ring-like structure, becoming a trophozoite. Some of them might have an extra-vascular merozoite origin, making these recurrences recrudescences, not relapses.