source: [word=drug] □ □ □
destination: [word=drug] [□] □ □
spec: How exactly DOD should invest its money is one matter of concern . Norwegian company seeking to develop a male birth control pill has signed a licensing agreement with the University of Massachusetts Medical School covering research that could lead to a drug to block sperm 's ability to swim and fertilize an egg .... With wild roses representing the Provincial flower of Alberta and wavy lines representing the Bow and Elbow River junction where Calgary is situated , the badge followed the original Palliser family crest as much as possible . The drug also blocked production by COX-1 of prostacyclin , a member of a family of potent , hormone-like substances called prostaglandins that play a role in a wide variety of physiological functions including pain , inflammation and , presumably , cancer . In his study , the drug completely blocked HIV infection in a mouse model . Primaquine , another anti-malaria drug , blocks transmission of the parasite after 24 hours . If anything Satch said had sunk in , then more good came of this visit than any lesson I could have prepared on my own . For others , IBS strikes seemingly randomly and without warning and never completely goes away . In subsequent studies , Brookhaven collaborations found that the drug effectively blocked test animals ' craving for nicotine , heroin , alcohol and methamphetamine .