Volume 30, Number 9—September 2024
Dispatch
Avian and Human Influenza A Virus Receptors in Bovine Mammary Gland
Charlotte Kristensen
, Henrik E. Jensen, Ramona Trebbien, Richard J. Webby, and Lars E. Larsen
, Henrik E. Jensen, Ramona Trebbien, Richard J. Webby, and Lars E. Larsen
Table
The average percentage of epithelial staining of the human and duck influenza A virus receptors in the alveoli and ducts in 9 cows with different breeds, ages, and parity status*.
| Breed | Age, y | Parity | Lactation† | % SNA |
% MAA-II, alveoli‡ | |
|---|---|---|---|---|---|---|
| Alveoli | Ducts | |||||
| Jersey |
6 |
4 |
Late |
53 |
18 |
37 |
| Danish Holstein | 4 | 2 | Late | 57 | 3 | 47 |
| 7 | 5 | Late | 40 | 21 | 46 | |
| 6 | 4 | Early/mid | 47 | 4 | 44 | |
| 5 | 2 | Late | 58 | 24 | 61 | |
| 6 | 4 | Early/mid | 51 | 10 | 49 | |
| 5 | 3 | Early/mid | 55 | 1 | 51 | |
| 4 |
3 |
Late |
52 |
32 |
48 |
|
| Unknown |
Unknown |
Unknown |
Early/mid |
59 |
6 |
47 |
| Average | 5 | 3 | NA | 54 | 13 | 48 |
*MAA-II, duck receptor; NA, not applicable; SNA, human receptor. †All images were obtained from active alveoli of the mammary glands and the staining is therefore not representative for the whole section of cows in late lactation. The lactation period was determined by investigating the luminal size of the alveoli and the amount of connective tissue (12). ‡The staining did not exceed the amount of staining observed with the neuraminidase treatment, suggesting a nonspecific staining in the ducts.
Page created: July 17, 2024
Page updated: August 21, 2024
Page reviewed: August 21, 2024
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