To reduce preservation-associated artifacts, we examined samples of Mimivirus-infected amoebae preserved by rapid freezing, vitrified directly from the living state and processed by freeze-substitution to epoxy resin embedding.
As gorilla samples collected in the same manner from the same site over a similar time period had a higher success rate (82%, [26]), and chimpanzee samples from other research sites have similarly high success rates [43], [48], we suspect that some component of the Loango chimpanzee diet reduces preservation and/or inhibits amplification of chimpanzee DNA [77], [78].
In our protocol, we could observe reduced preservation of nuclear morphology when denaturation at 75°C in 50% formamide was increased from 2 to 4 min (data not shown).
Deterioration is reduced by preservation technology.
The low CaCO3 contents during the Pliocene probably resulted from the reduced carbonate preservation in deep-sea water, with high nutrients and dissolved CO2 derived from the North Pacific.
Therefore, the absence of sediment-rich floods in this regulated river, which formerly deposited large fluvial sandbars from which aeolian sediment was derived, has substantially altered processes by which the prehistoric, inhabited landscape formed, and has also reduced the preservation potential of many significant cultural sites.
If tidal volume is reduced under preservation of minute ventilation - in the context of protective ventilation - the same ventilatory effect can be achieved with a smaller energy transfer by a reduction of the frequency dependent impedance.
Recent studies have also indicated that treatment of kidney donors with dopamine improves long-term graft survival after kidney transplantation [ 15], possibly due to induction of antioxidants such as heme oxygenase 1 [ 16] or by reducing hypothermic preservation related transplant injury [ 17].
The present study presents an alternative way of recycling PET, contributing to reduce waste environment preservation.
Angiotensin converting enzyme inhibitor and angiotensin receptor blocker can help to reduce proteinuria and preservation of renal function in patients with IgAN [ 50].
Such measures could create positive pressure to deliver, avoid the "mission creep" that occurs when organisations chase funding to sustain themselves, and reduce the self-preservation biases that generate resistance to change.
