Hemolytic Streptococci in Raw Market Milk
A total of 444 samples of raw market milk from as many different dairy farms was examined for the presence of hemolytic streptococci of both wide-zone and narrow-zone types. Such streptococci were found in 134 of these samples and were distributed among the Lancefield serologic groups as follows: gr...
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| Veröffentlicht in: | Journal of dairy science 1940-05, Vol.23 (5), p.447-455 |
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| container_title | Journal of dairy science |
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| creator | Gunnison, J.B. Luxen, M.P. Marshall, M.S. Engle, B.Q. |
| description | A total of 444 samples of raw market milk from as many different dairy farms was examined for the presence of hemolytic streptococci of both wide-zone and narrow-zone types. Such streptococci were found in 134 of these samples and were distributed among the Lancefield serologic groups as follows: group A in three samples, group B in 125, group C of the animal type in one, group C of the human type in two, group D in two, group B in two, group G in six and group H in one. Only four samples contained streptococci which could not be assigned to a group. Nineteen samples of raw cream were tested and group B streptococci were found in five of them. Approximately half of the group B streptococci produced double zones of hemolysis in rabbit blood agar. |
| doi_str_mv | 10.3168/jds.S0022-0302(40)95545-X |
| format | Article |
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| title | Hemolytic Streptococci in Raw Market Milk |
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