These are pretreated and laundered industrial stain monitors that Andrea used during detergent testing. The bottom-middle monitor shows stains pretreated and washed with Tide Free & Gentle.

CNN reporters and hosts said Monday that President Biden's decision to pardon his family members in the waning minutes of his administration tarnished his reputation and was "a stain on his legacy." ...

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it didn’t occur to me that it might be a highly effective toilet bowl cleaner until I was faced with the persistent toilet stain situation. (I hate to even type those words.) I assumed it was ...

CD31 staining, the sections were fixed in acetone for 10 min at −20°C and blocked with 5% BSA, 1% goat serum, and 0.05% Triton X-100 in PBS for 1 h at room temperature. The sections were then ...