search for: pericardial

...o it in R. The setting: Data from an assay, wherein 6-hours-post-fertilization zebrafish embryos (n=20, say) are exposed in a vial to a chemical (replicated 3 times, say), and 5 days later observed for the presence/absence (1/0) of defects in several organ systems (yolk sac, jaw, snout, body axis, pericardial edema, etc.) for each fish. The assay can be used as a screen (in which case a single response 'any' is first analyzed) as well as for comparing the responses of different classes of chemicals (a MANOVA-type analysis). Interest is focused on where response(s) are occurring, any associations...