Sentences with phrase «untreated test animals»

Once this procedure had worked well in the early stages of the tumor, the researchers waited in the next stage until the tumor was very large and the life expectancy of the untreated test animals was less than three weeks.

Not exact matches

But in a second memory test, wherein the animals had to learn to associate a dark chamber with a mild electric shock, the treated Alzheimer's mice did not outperform their untreated counterparts.

The old mice also performed significantly better than untreated animals on tests of learning and memory.

The researchers also implanted untreated — or «as - cast» — alloy, finding that both the as - cast samples and T - 5 heat - treated alloys showed good biocompatibility and promoted bone growth in test animals.

However, cell - grafted animals tested at P150 continued to perform as high as 0.49 c / d (data not shown), whereas no measurable response was observed in any of the sham - operated or untreated retinas at this late time point.

In summary, no significant differences were identified between treated and untreated animals when the following were tested (by Chi squared analysis and Fisher's exact test): (1) Number of animals positive for B. burgdorferi by PCR; (2) number of animals positive for B. burgdorferi by xenodiagnosis; and (3) number of animals positive for B. burgdorferi by RT - PCR, either directly or by analysis of in vivo culture tissue.