Table 1.
Fold increases of the number of macrophages and γδ T cells in different tissues from Chlamydia-infected chicken embryos
| Cells | dpi | Fold increase of immune cells per mm2a |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CAM |
Liver |
Spleen |
Bursa |
Heart |
Intestine |
||||||||
| Cps | Cab | Cps | Cab | Cps | Cab | Cps | Cab | Cps | Cab | Cps | Cab | ||
| Macrophages | 1 | NC | NC | 1.7AC | 1 | ND | ND | ND | ND | NC | ND | 1 | ND |
| 2 | 10AC | NC | 1.6C | 1 | ND | ND | 6.3A | ND | NC | ND | 1 | ND | |
| 3 | 15.2AC | 2.2 | 1.8AC | 1 | 2.2AC | 1.1 | 1 | ND | 1 | ND | 1 | ND | |
| 4 | 188AC | 38B | 3.2AC | 1.4 | 3AC | 1.8B | 1.5A | ND | 6.3A | ND | 1.2 | ND | |
| 6 | 431AC | 156B | 9.6A | 12.7B | 2.5A | 3.2B | 2.5A | ND | 8.8A | ND | 2.1A | ND | |
| 8 | 82.3A | 75B | 33.8AC | 9.5B | 4.9AC | 2.8B | 2A | ND | 13.5A | ND | 5.4A | ND | |
| γδ T cells | 4 | NC | NC | NC | NC | NC | NC | NC | ND | NC | ND | NC | ND |
| 6 | NC | NC | 6 | NC | 6A | 6 | NC | ND | NC | ND | NC | ND | |
| 8 | 6A | 6B | 3.3A | 3.3B | 6.3A | 11.3B | 1 | ND | NC | ND | 1 | ND | |
a
Four embryos per dpi; 5 regions of interest counted. Letters beside values indicate significant difference (P ≤ 0.05; A, mock versus C. psittaci; B, mock versus C. abortus; C, C. psittaci versus C. abortus) after C. psittaci infection or C. abortus infection as calculated by Mann-Whitney U test. Significances refer to the original values. Cps, C. psittaci; Cab, C. abortus. NC, no cells found. ND, not determined because of small organ size (C. psittaci) or low infection rate (C. abortus).