Sentence:  Our own studies in which bronchial artery pulmonary artery <WSD>anastomoses</WSD> were demonstrated , were accomplished by injecting the bronchial artery first with no pressure on the pulmonary artery or vein , and then by injecting the pulmonary artery and vein afterwards . 
Meaning of the word marked with <WSD> tags:  a natural or surgical joining of parts or branches of tubular structures so as to make or become continuous