Table 3.
Characterization of Microphallus papillorobustus populations in gammarid brains used for Nitric Oxide Synthase (NOS) experiments, and NOS-IR levels in brains infected with one metacercaria (mc).
| Gammarids' behavioral status | Number of brains | Number of infected brains | Number of mcs per infected brain | Number of brains with one mc* | Percent difference in the number of NOS-IR particles** |
|---|---|---|---|---|---|
| Mean (Range) | Mean (Range) | ||||
| MAD | 22 | 22 | 2.2 (1 - 7) | 8 | 32.6 (-7 to 83) |
| Normal | 17 | 5 | 1.6 (1 - 3) | 3 | 3.4 (-9 to 17) |
*one single mature metacercaria in MAD gammarids; one developing or fully-developed metacercaria in normal gammarids
** [(ni - nu)/nu] × 100; ni represents the number of NOS-IR particles in the infected region of the brain, and nu the number of particles in the contralateral uninfected region in brains with one metacercaria.