Table 2. TNTs and TNT-like structures.

Name	Thickness	Actin	Structural connectivity	Above substratum	Hypothesized functional role	Refs
TNTs	50–200 nm	Yes	Yes	Yes	Yes	1
Filopodia	100 - 300 nm	Yes	No	Yes/No	Yes	44
Cytoneme	200 nm	Yes	Unknown	N/A, Tissue only	Yes	24, 45
Streamers	”very thin”	Yes	No	N/A	Yes	26
Nanopodia	100–300 nm	No	No	No	No	27