Says ‘One million Yemeni children face serious malnutrition within months as families struggle to pay for food in one of the Arab world’s poorest countries, the U.N. World Food Program has warned,’ Reuters reviews. ‘Political turmoil provides pushed Yemen to the brink of a humanitarian crisis and help organizations estimate half the country’s 24 million people are malnourished,’ the news headlines agency adds . Regarding to BBC News, ‘The U.N. Estimates that 267,000 Yemeni kids are facing life-threatening levels of malnutrition and that 10 million Yemenis go to bed hungry’ .Signaling pathways involve molecules in a cell that control cell functions – – such as for example cell division – – by cooperation. For example, the first molecule in the process receives a signal to begin with. It tells another molecule to work then, and so forth. Treatment of breast tumor differs by patient due to differences in tumors. Some tumors contain protein receptors that are activated by the hormones progesterone or estrogen. Others react to another proteins called human epidermal development aspect receptor 2, or HER2. Each of these is normally treated in a different way. A triple-negative breast cancers does not have any of these proteins receptors and is typically aggressive.