Table 3

Ultrastructural studies of mast cells in the duodenal mucosa of study subjects

Type of changeHealthy controls (n = 23)†O1 patients (day 2)‡ (n = 50)O1 patients (day 7) (n = 35)O1 patients (day 30) (n = 34)O139 patients (day 2) (n = 17)O139 patients (day 7) (n = 9)O139 patients (day 30) (n = 16)
†n = number of mast cells studied ultrastructurally.
‡Days after onset of disease in patients.
§Numbers indicate percentage of cells with the particular type of activation that were studied.
*p<0.05, χ2 or Fisher’s exact test was used to determine statistically significant differences between patients at the different stages of infection and healthy controls.
PMD, piecemeal degranulation; AND, anaphylactic degranulation.
PMD (1+)356*1732124418
PMD (2+ to 3+)061*60*53*71*33*25*
Lipid body activation3556605082*77*62