TMA for all: a new method for the construction of tissue microarrays without recipient paraffin block using custom-built needles

Table 1 Needles measures and characteristics

External diameter		Hub color	Internal diameter		Core area (mm²)
Gauge	Millimeter		Inches	Millimeter
16 G1 1/2	1,60 × 40	white	0.047	1,19	1,1
18 G1 1/2	1,20 × 40	pink	0.033	0,83	0,53
21 G1 1/4	0,80 × 30	green	0.020	0,5	0,2

ISSN: 1746-1596