Hair Trace Evidence
Hair is composed of • Hair is produced by What is hair?
Hair is common. • You can not determine • Nuclear DNA Why is hair useful?
The hair shaft is composed of three parts: • The cuticle: • The cortex: • The medulla: Morphology of Human Hair
Identified three ways: • Coronal (crown-like): • Spinous (petal-like): • Imbricate: Cuticle
Can be identified four different ways: • Continuous • Interrupted • Fragmented • No medulla Medulla
Identified three ways: • Cortical fusi • Pigment granules • Ovoid bodies Cortex
Use tweezers to collect and place evidence in the middle of a druggist fold. • Fold and tuck the paper so the evidence is secure. • Place the paper in an envelope and seal. Make sure to label the envelope appropriately. Collection and Preservation