untreated

adjective (of a specimen for study under a microscope) not treated with a reagent or dye
Found on https://www.encyclo.co.uk/local/20974

Untreated

Seeds that have no chemical treatments. All seeds offered by Johnny's are untreated unless otherwise noted.
Found on http://www.johnnyseeds.com/growers-library/glossary.html

untreated

[adj] - not given medical care or treatment 2. [adj] - not subjected to chemical or physical treatment 3. [adj] - (of a specimen for study under a microscope) not treated with a reagent or dye
Found on http://www.webdictionary.co.uk/definition.php?query=untreated
No exact match found