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Abstract

A microtitre ELISA to determine aflatoxin M1 in milk was developed for processing a large number of samples. The process utilizes the same antibodies and reagents as the Kieler Pearl ELISA. When the 2 methods were compared, correlation coeff. was 0.89 in a concn. range of 0 to 50 ng/kg (parts per...

Author(s)
Hammer, P.; Wetzel, S.; Ubben, E. H.; Heeschen, W.
Citation
DMZ, Lebensmittelindustrie und Milchwirtschaft, 1991, 112, 13, pp 364-365
Abstract

Anti-haemolysins obtained by immunizing rabbits and miniature pigs with haemolysin from Listeria monocytogenes serotypes 1/2a and 4b were used in a double sandwich ELISA technique that was highly specific for L. monocytogenes and the closely related species L. ivanovii, L. seeligeri, L. welshimeri ...

Author(s)
Hahn, G.; Hammer, P.; Heeschen, W.
Publisher
Deutsche Veterinärmedizinische Gesellschaft eV, Giessen, German Federal Republic
Citation
29. Arbeitstagung des Arbeitsgebietes 'Lebensmittelhygiene'. Leitthema: Qualitätssicherung und Lebensmittelhygiene. In Garmisch-Partenkirchen vom 13. bis 16 September 1988., 1988, pp 389-397
Abstract

Modified McBride agar (MMA), lithium chloride phenylethanol moxalactam agar (LPM) and Listeria Selective Medium (Oxford agar) were tested for detection of listeria in 65 red-smear and 37 yellow-smear (Harz) cheeses. In terms of selectivity, suppression of interfering organisms and identification of ...

Author(s)
Hammer, P.; Hahn, G.; Heeschen, W.
Citation
Deutsche Molkerei-Zeitung, 1988, 109, 50, pp 1700-1702, 1704-1706
Abstract

The cells in milk were counted by the microscopic method, the Coulter Counter, the fluorescence-optical method (Fossomatic) and by continuous flow analysis in the Auto-Analyser system. It is stressed that with increasing automation it is necessary to carry out quality control of the analytical...

Author(s)
Heeschen, W.; Tolle, A.
Citation
Milchwissenschaft, 1976, 31, 1, pp 13-14
Abstract

203 Group B streptococci of human and bovine origin were typed by the method of Lancefield and Pattison. There was some overlapping, but human strains were predominantly types Ia, Ib and III, whilst bovine strains were chiefly types R, X and RX.-AB.

Author(s)
Jelinková, J.; Heeschen, W.
Citation
Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene, 1969, 209, pp 315-324
Abstract

The technique of the examination of blood in the diagnosis of leucosis is described, including the use of an electronic machine for counting blood cells. Using this machine, 3-4 laboratory staff should be able to test 1, 000 blood samples a week. Control measures are discussed. Another paper on the ...

Author(s)
Seelemann, M.; Heeschen, W.; KrüGer, K. E.
Citation
Rindertuberkulose und Brucellose, 1962, 11, pp 135-154
Abstract

The technique of the examination of blood in the diagnosis of leucosis is described, including the use of an electronic machine for counting blood cells. Using this machine, 3-4 laboratory staff should be able to test 1, 000 blood samples a week. Control measures are discussed. Another paper on the ...

Author(s)
Seelemann, M.; Heeschen, W.; KrüGer, K. E.
Citation
Rindertuberkulose und Brucellose, 1962, ll, pp 128-134