Related Experiment Video
Updated: Feb 14, 2026

Use of the Protease Fluorescent Detection Kit to Determine Protease Activity
Published on: August 4, 2009
[Determination of Hair Shafts by InnoTyper® 21 Kit]
1Center of Forensic Judicial Appraisal, Dongcheng District Public Security Bureau of Beijing City, Beijing 100061, China.
Objectives:
To explore the application value of InnoTyper® 21 kit in forensic practice.
Methods:
Samples of hair shafts and saliva were collected from 8 unrelated individuals. Template DNA was extracted by AutoMate Express™ forensic DNA automatic extraction system. DNA was amplified by InnoTyper® 21 kit and AmpFℓSTR™ Identifiler™ Plus kit, respectively, and then the results were compared.
Results:
After the amplification by InnoTyper® 21 kit, complete specific genotyping could be detected from the saliva samples, and the peak value of genotyping profiles of hair shafts without sheath cells was 57-1 219 RFU. Allelic gene deletion could be found sometimes. When amplified by AmpFℓSTR™ Identifiler™ Plus kit, complete specific genotyping could be detected from the saliva samples, and the specific fragment was not detected in hair shafts without sheath cells.
Conclusions:
The InnoTyper® 21 kit has certain application value in the cases of hair shafts without sheath cells.
Related Concept Videos
Hair Cells
Stresses in a Shaft
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
Accessory Structures of the Skin: Hair and Hair Follicles
Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Hair strands originate at the epidermal penetration called the hair follicle. The hair shaft is the part...
Deformation in a Circular Shaft
Transmission Shafts: Problem Solving
Next, use bending moment diagrams for the shaft to...
Design of Transmission Shafts

