1. Morphology and histology of human and canine internal thoracic arteries 
Tadahiro Sasajima, MD, Vishwanath Bhattacharya, MD, Moses Hong-De Wu, MD, Qun Shi, MD, Naoki Hayashida, MD, Lester R Sauvage, MD 
The Annals of Thoracic Surgery 
Volume 68, Issue 1, Pages (July 1999)
DOI: /S (99)

2. Fig 2
Comparison of paired left and right canine thoracic arteries (LITA, RITA), at 8 cm from the origin. Cross sections of LITA (A) and RITA (B) (Verhoeff’s and van Gieson’s stains; X 20 before % reduction). Sections of the same canine LITA (C) and RITA (D) at higher magnification (Verhoeff’s and van Gieson’s stains; X 80 before % reduction).
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

3. Fig 1
(A) Cross section (Verhoeff’s and van Gieson’s stains; × 20 before % reduction) of a human internal thoracic artery, 8 cm from the origin, taken from a 19-year-old. (B) Cross section of the same artery. (Verhoeff’s and van Gieson’s stains; × 80 before % reduction) (C) Cross section (Verhoeff’s and van Gieson’s stains; × 80 before % reduction) of human ITA from a 79-year-old, showing degenerating original internal elastic lamina (arrow a) and intact innermost medial elastic lamina (arrow b).
The Annals of Thoracic Surgery  , DOI: ( /S (99) )