Table 4.

Sources of SHG

Structure	Biological significance	References
Fibrillar collagens	Structural proteins	Konig et al.59
Tubulin	Axons, mitotic spindle	Campagnola et al.96
Actomyosin structures	Skeletal muscle	Campagnola et al.96
Fibrillar cellulose	TE scaffolding	Nadiarnykh et al.97
Silk	TE scaffolding	Rice et al.64