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: Moreover , both drugs at the dose of 0 . 5 mg / kg antagonized completely the convulsant activity and the increase of [ 35S ] TBPS binding induced by isoniazide ( 350 mg / kg s . c . ) as well as the increase of [ 35S ] TBPS binding induced by foot - shock stress .
### Output Text:
Moreover , both drugs at the dose of 0 . 5 mg / kg antagonized completely the convulsant activity and the increase of <span class="chemical">[ 35S ] TBPS</span> binding induced by <span class="chemical">isoniazide</span> ( 350 mg / kg s . c . ) as well as the increase of <span class="chemical">[ 35S ] TBPS</span> binding induced by foot - shock stress . 