Ratings for diseased leaf area, disease severity and area under the disease progress curve, on the other hand, involve visual quantification of overall disease progress on the entire plant.
Overall, improving technology to identify causative agents more accurately, creating standard epidemiological data for diseased populations, and enhancing the knowledge of disease dynamics can improve the understanding of risks caused by interactions among various populations (Harvell et al. [1999]; Daszak et al. [2000]; Harvell et al. [2002]).
Reef fish could be involved in regulating the disease dynamics of PorTL and MWS directly by offering a mechanism for diseased tissue removal via predation that could lead to individual host recovery [63].
Some act as scouts, looking for diseased tissue.
Scientists had experimented with mechanical replacements for diseased hearts since at least the 1930s.
It said it had recruited 10,000 animal health workers to scour the countryside for diseased birds.
On Tuesday the agriculture minister, Jean Galvany, announced that the testing program for diseased cows would be broadened to include random testing of even healthy-looking cows.
The study assessed 79 patients who had suffered a heart attack, 25 who were healthy, and seven who were receiving treatment for diseased blood vessels.
Scientists in Britain also have received approval to proceed with therapeutic cloning, the idea of generating healthy replacements for diseased tissues from embryonic cells derived from the patient's own mature cells.
Many scientists say it's improbable that there will be a breakthrough soon in which stem cells might be used to grow replacement cells for diseased tissues, leading to a spectacular cure for a dreaded condition.
Up the lane and out of sight of home, pheasants scuttle across stubble while sheep and bullocks shelter under a hedge adjoining the field that was named as "plaguery" on the tithe map (maybe a reference to its use as an isolation area for diseased animals in former days).
