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: At day 5 , GLEPP1 protein and mRNA were reduced from the normal range ( 265 . 2 + / - 79 . 6 x 10 ( 6 ) moles / glomerulus and 100 % ) to 15 % of normal ( 41 . 8 + / - 4 . 8 x 10 ( 6 ) moles / glomerulus , p < 0 . 005 ) .
### Output Text:
At day 5 , GLEPP1 protein and mRNA were reduced from the normal range ( 265 . 2 + / - 79 . 6 x 10 ( 6 ) moles / glomerulus and 100 % ) to 15 % of normal ( 41 . 8 + / - 4 . 8 x 10 ( 6 ) moles / glomerulus , p < 0 . 005 ) . 