Sentence examples for primary origin of from inspiring English sources

What makes the iris a good way to identify people? A. The primary origin of the unique character of the human iris lies in the process of development of tissue in the human embryo.

Because of the diverse chemistry, mineralogy, and primary origin of metamorphic rocks and because of the diverse fabrics or textures that may develop depending on the stresses that may operate during their formation, there is no simple, universally used classification of these rocks.

Like the epidermis, the periderm is a protective tissue on the periphery of the plant body; however, because the periderm is produced by a lateral meristem, it is considered to be of secondary origin (in contrast to the primary origin of the epidermis from the protoderm).

The fallopian tube has been implicated as the primary origin of pelvic serous cancers.

This necessity occurs when the treating physician doubts for the primary origin of headache.

These observations provide evidence for a primary origin of the observed remanences.

The EEZs of developing economies are the primary origins of illegally obtained fish (HSTF 2006; MRAG 2008).

Fibroblasts and epithelial cells are the primary origins of myofibroblasts in IPF.

However, the increased number of evidences has unequivocally stated that fibril precursors such as oligomers and protofibrils are the primary origins of pathological behaviour [ 7].

Although these interneurons home to their respective layers of the cerebral cortex, they are generated in various subpallial locations; the primary origins of these interneuronal progenitors will be extensively discussed as well.

There have been several independent primary origins of plastids from cyanobacterial endosymbionts [ 9, 10], as well as undetermined numbers of secondary, tertiary, and perhaps higher order endosymbioses involving eukaryotic to eukaryotic plastid transfer (see [ 11- 13] for reviews).