In the sentence extracted from biomedical literature, identify all the chemical entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="chemical"> to denote a chemical.

### Input Text: Sodium chloride solution ( 0 . 9 % ) or noradrenaline in doses of 4 , 12 and 36 micrograms h - 1 kg - 1 was infused for five consecutive days , either intrarenally ( by a new technique ) or intravenously into rats with one kidney removed .
### Output Text:
<span class="chemical">Sodium chloride</span> solution ( 0 . 9 % ) or <span class="chemical">noradrenaline</span> in doses of 4 , 12 and 36 micrograms h - 1 kg - 1 was infused for five consecutive days , either intrarenally ( by a new technique ) or intravenously into rats with one kidney removed . 