Periods are awesome! A new study has found that circulation-blocked mice, when injected with cells obtained from menstrual blood (called endometrial regenerative cells) their circulation and functionality were restored. This means that people suffering from critical limb ischemia, as advanced form of peripheal artery disease that causes 150,000 amputations a year, may be able to be treated with ERCs. The cells are good because they don't requite matching, complex equipment, can be delivered to the point of care, and are capable of forming 9 different tissue types. [Science Daily]