Used in biomedical research to detect and quantify preexisting protein 1 (PS1) levels in mouse samples, particularly in studies related to Alzheimer's disease. Helps researchers investigate the role of PS1 in amyloid precursor protein processing and gamma-secretase activity. Commonly applied in neuroscience and pharmacological studies using mouse models to evaluate disease mechanisms and potential therapeutic interventions. Provides a reliable, sensitive method for measuring PS1 in tissue homogenates, cell lysates, and biological fluids.