Genetic Changes. Mutations in the ATM gene cause ataxia-telangiectasia. The ATM gene provides instructions for making a protein that helps control cell division and is involved in DNA repair. This protein plays an important role in the normal development and activity of several body systems, including the nervous system and immune system.
The Best OTF Knife â Blade Types. OTF knives give you added access to your blade, when you need it most. This type of knife uses a assisted opening mechanism to fire the blade up and out the front of the knife handle. OTF knives come in a variety of blade configurations.
With apertures as wide as f/1.4 (and a staggering f/1.2 in the case of Canon EF 85mm f/1.2L II USM lens), they are not only good at even the darkest environments a wedding photographer may find himself or herself in, but are also brilliant for shallow depth of field photography, especially portraits.