first-year of growth (actual diameter of about 3 mm). rows of large pink cells in the centre - these are the xylem cells that make-up the wood. the xylem is the bark (stem cortex) and inside the xylem is the pith (stem medulla). traversed by rays of parenchyma cells, like radial spokes (stained green).
verity noun. âº [U] the âquality of being âtrue: In the âfilm, he âplays a âspy whose âmission is to âconfirm the verity of a âsecret âmilitary âdocument. âº [C] a âbelief, âidea, or âprinciple that is âgenerally âaccepted as being âtrue: She has âspent her âlife in a âsearch for âeternal/âscientific/âuniversal verities.
A biography published this week reveals that Professor Clark - now on the verge of his 80th birthday - might end up being be celebrated for much more than a cure for deafness. The electrode technology he pioneered for his cochlear implant is now well on the way to creating a bionic spine, allowing quadriplegics to walk again. William Verity reports. WILLIAM VERITY: For most people, inventing a device that has cured deafness for 500,000 people worldwide would be lifetime achievement enough.