Scientists, it seemed clear, began with careful observations, cautiously proceeded to a tentative hypothesis, progressed to more secure but still provisional theories, and only in the end achieved, after a long process of verification, the security of permanent laws.
Again, this observation should be cautiously unravelled, but a possible explanation may be that IL12 is an essential pro-inflammatory cytokine that is decreased in several cancer types, particularly in later stages; hence, it might be in relation to inflammatory and FDG-avid peri-tumoural tissue, the first to be dampened by an active targeted compound (Del Vecchio et al, 2007).
Despite the relatively small sample size, some observations can be cautiously derived from the data.
However, this observation must be taken cautiously because GH levels were measured only once per mouse.
However, this observation needs to be cautiously interpreted, as although HIF-1 α downregulation was seen in both combined arms, only in Detroit 562 there was decreased angiogenesis.
The odds ratio for freedom from postoperative complications was 9.00 for the high MIF expression genotype, CATT7X, but this observation should be considered cautiously given the small patient cohort and the wide 95% confidence interval (1.14 71.04).
Nevertheless, this observation should be taken cautiously as mutations in developmental genes could cause lethality and also because gene expression data, mostly obtained from rodent species, might not be completely valid for humans.
However, as most older candidates (all except 61 individuals over 20 years) were excluded on the basis of missing A level data this observation should be treated cautiously. 5.
Recently, Schwartz et al. (2005) reported stronger associations of PM2.5 (especially black carbon) with HRV decrements in subjects with a prior myocardial infarction (n = 3) relative to the other subjects (n = 25), although this observation must be interpreted cautiously because of small numbers.
Therefore, each of the above observations should be interpreted cautiously.
