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Submitted by		Severino C. Michelin, Nuclear Regulatory Authority
		Commenting as an individual
Document		Early and late effects of radiation in normal tissues and organs: threshold doses for tissue reactions and other non-cancer effects of radiation in a radiation protection context

Dear colleagues

I would like to make some observations in the Draft Report « Early and late effects of radiation in normal tissues and organs: threshold doses for tissue reactions and other non-cancer effects of radiation in a radiation protection context »

1) The unit used is Gy, mGy or cGy. I think it is better to use all the time Gy only

2) in paragraph 1.3.1There is no mention to Autophagy, necrosis and mitotic catastrophe as a mechanism likely to cause cellullar death

3) Line 1675 reference is UNSCEAR 2008. it is not mentioned in the references, I think that the reference is UNSCEAR 2006 ?

4) Fig 2.3 is too small

5) Line 9374 Is USNCEAR 2006 not 2009

I hope that this small contribution will be useful.

Thanks you in advance

Severino Michelin

Nuclear Regulatory Authority

Radiopathology lab.

Buenos Aires - Argentina

E mail smichelin@arn.gob.ar