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: Experiments in mice tested previous evidence that activation of cholinergic systems promotes catalepsy and that cholinergic mechanisms need to be intact for full expression of neuroleptic - induced catalepsy .
### Output Text:
Experiments in mice tested previous evidence that activation of cholinergic systems promotes catalepsy and that cholinergic mechanisms need to be intact for full expression of <span class="chemical">neuroleptic</span> - induced catalepsy . 