The complement fixation elution profiles of dengue-2 virus-infected suckling mouse brain supernatant fluids from Sephadex G-200 columns were compared by the antigen end-point titration procedure and by a complement dilution technique. The latter technique was found to be a quick method for approximating the complement-fixing antigen in eluates.

We predicted that the proportion of suckling attempts rejected and terminated by the mother would be greater for female foals than male foals, based on parent offspring conflict theory and on the assumption that throughout the study, all zebra mothers were in good condition because of captivity. We presumed that an increasing rate of suckling terminated or rejected by a mother would indicate a ...

One hundred and sixty–four feacal samples from six different kinds of animals (chickens, cow, pigs, goats, cats dogs) were examined for enterotoxin producing Escherichia coli Enetrohaemorhagic strain 0157:H7, using Suckling mouse assay, ligated rabbit illeal loop assay 0157:H7 antiserum respectively. A total 90(54.9%) strains isolated. EHEC was not detected, but 6(6.7%) isolates found positive ...

Clostridium perfringens type A (CPA) may cause suckling piglet diarrhea, which occurs within 48 hours of birth and may last approximately 5 days. Pathological findings may be unremarkable, but CPA is usually observed in or cultured in large numbers from the intestinal lumen. Preventions and treatments for CPA enteritis are variable in efficacy. A toxoid has recently become available. In this st...

To model establishment of Helicobacter pylori infection in infants, suckling mice were inoculated with mixtures of strains that preferentially colonize different gastric regions and coexist in vivo. Characterization of H. pylori recovered 2 weeks later showed that susceptibility begins earlier for some strains than for others and that the onset of susceptibility varies among mouse lines.

Under usual conditions, the growth of the suckling mouse is limited by the quantity of mother's milk available. As this limitation is removed the growth curve approaches a parabola, which is abruptly interrupted at the end of the second week, when the natural process of weaning begins.

Cryptosporidicidal effects of two polyether ionophores (maduramicin and alborixin), a fluorinated 4-quinolone (enrofloxacin), and three analogs of pentamidine were evaluated in a suckling mouse bioassay. Treatment with all compounds except enrofloxacin and one of the pentamidine analogs [1,3-di(4-imidazolinophenoxy)propane] resulted in significant (P less than 0.05) reductions in oocyst excretion.

Two experiments were performed to test the hypothesis that suckling behavior of calves with similar growth potential varies depending on cows' level of estimated milk production and stage of lactation. Eleven mature cows, which varied in estimated 205-d milk production (996 to 2354 kg/205 d), nursing heifer calves of similar growth potential were used in Exp. 1. Suckling behavior of calves was ...

BACKGROUND ~ Difficulty is often encountered in attempting to raise infectivity titers of newly isolated dengue virus strains by repeated passage in either LLCMk2 cells or suckling mouse brain (SMB)o Recently, a new mosquito cell line, the C6/'36 Aedes az'bopiatus ce111ine (1), was developed with the express goal of increased sensitivity and yield specifically for dengue viruses. This line was ...