Sentence examples for this has been observed from inspiring English sources

This has been observed in both animal experimental studies (54) and human observational studies (55).

This has been observed in experiments.

This has been observed from the next wing, Room 2365.

This has been observed (Philipona 2004, Evans 2006, Wang 2009).

This has been observed that some animals can still get infected after Lyme vaccination.

And they say the weather has a significant impact the first time this has been observed on this scale.

For example, this has been observed with tumour necrosis factor inhibitors3 and may become more important in the future.

This has been observed on paediatric subjects in in vivo studies.

This has been observed numerically as well as verified through hardware experiments.

This has been observed both in the United States and in the northern parts of Sweden and Finland, where the diet is ordinarily deficient in vitamins.

Cows eat grass this has been observed for eons.