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ID number:835024
 
Author:
Evaluation:
Published: 07.02.2006.
Language: Latvian
Level: College/University
Literature: n/a
References: Not used
Extract

Vīrusi (lat. virus – inde) – bezšūnu dzīvības formas, kas sastāv no nukleīnskābēm un olbaltumvielām. Vīrusi ir šūnu parazīti, kas vairojas tikai dzīvās šūnās (savu sastāvdaļu sintēzei izmanto šūnas fermentu sist.); tos nevar kultivēt ārpus šūnas mākslīgās barotnēs. Vīrusa lielums 18 – 350 nm. Pēc formas vīrusi parasti ir sfēriski, ovāli, nūjiņveidīgi. Saskatāmi tikai elektromikroskopā. …

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