Mouse Hair Medulla Pattern

The distinctive pattern shown by these units varies over the length of the hair in a way that can be very characteristic.

Mouse hair medulla pattern.

For animal hair it is usually greater than 1 2. In this figure examples of different medullary patterns of mammalian hair. 3 22 05 and 3 24 05 basic structure of hair a hair can be defined as a slender thread like outgrowth from a follicle in the skin of mammals. Guard hair samples from several species were measured for length width medulla formation and cuticle scale pattern under a light microscope or scanning electron microscope.

56 identified epithelial and stromal cell populations reveal unprecedented molecular details of cell types and states coordinating hair growth underlying progenitor commitment and lineage differentiation spatiotemporal fibroblast heterogeneity and potential epithelial. The patterns exhibited by these units in any given hair are often sufficient to identify the genus the species or even the individual that the hair came from. In the image below show the medulla patterns for various types of hairs. The cortex gives hair its color the cuticle is useful to identify species and the medulla is the central canal.

Composed mainly of keratin it has three morphological regions the cuticle medulla and cortex. These regions are illustrated in figure 1 with some of the basic structures found in them. A human head hair 450x b dog fur 450x c deer hair 100x d rabbit fur 450x e cat fur 450x f mouse hair 450x. The follicle is clear as is the very end of the tip.

To identify different species of hair it is necessary to look at the medulla pattern to determine the origin of the hair. The medulla comes in different types and patterns. The cortex and the medulla. Use single cell rna seq and in situ mrna staining to characterize mouse skin during hair growth and rest.

Reproduced from saferstein criminalistics 5th ed prentice hall 1995. These samples were also analyzed for snps in the cytochrome b gene using a multiplex single base primer extension reaction. The appearance of human hair medulla looks fragmented and irregular while that of mouse hair medulla contains periodic pattern. Appaloosa white chestnut shaft from a spot partially viewed below is a sample of dun hair.

Medulla patterns from different types of hair. The medulla the medulla is the hair core that is not always visible. Intermittent or interrupted fragmented continuous.