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: Amphetamine ( 3 mg / kg ip ) induced hyper locomotion , apomorphine ( 1 . 5 mg / kg subcutaneously [ sc ] ) induced climbing , and haloperidol ( 1 . 5 mg / kg sc ) induced catalepsy tests were used as animal models of schizophrenia .
### Output Text:
<span class="chemical">Amphetamine</span> ( 3 mg / kg ip ) induced hyper locomotion , <span class="chemical">apomorphine</span> ( 1 . 5 mg / kg subcutaneously [ sc ] ) induced climbing , and <span class="chemical">haloperidol</span> ( 1 . 5 mg / kg sc ) induced catalepsy tests were used as animal models of schizophrenia . 