14 Apr 2012. Home INR monitors are simple to use and provide accurate results. You don't need any medical experience or technology skills to perform the simple INR test. The listed monitors are all approved for professional and home use allowing you immediate INR test values resulting in improved care.
Lampreys and hagfishes are the only jawless vertebrates to survive today. They both have a round mouth and for this reason are often referred to as cyclostomes. They are the most primitive of the vertebrates. By primitive, a biologist means that they are the least changed from the first vertebrates.1  They have no paired pectoral (shoulder) or pelvic (hip) fins. 2  Their notochord persists for life, never being completely replaced by a backbone even in the lampreys.3  They have no scales.y primitive, a biologist means that they are the least changed from the first vertebrates. 1  They have no paired pectoral (shoulder) or pelvic (hip) fins. 2  Their notochord persists for life, never being completely replaced by a backbone even in the lampreys. 3  They have no scales.
Early bird beat Archaeopteryx to worm by 10m years. The fossilised 'Dawn bird', Aurornis xui, lived 160m years ago and had downy feathers but was probably unable to fly. Aurornis xui 'pushes Archaeopteryx off its perch' as the oldest known member of the bird lineage.