Testicular immunology. (Redirected from Autoimmune orchitis) Testicular Immunology is the study of the immune system within the testis. It includes an investigation of the effects of infection, inflammation and immune factors on testicular function.
3 Reasons Costco Has Membership Fees. Numerous critics say prices at Costco Wholesale Corp. (COST), the members-only, big box discount retailer, aren't competitive. Its membership fees â $55 per year for a basic card or $110 per year for a 2% cash back card â are also too high, they say. But Costco uses a subscription model of business for three reasons.
Photo, file: Frederic J. Brown/AFP/Getty Images. Costco really has the ideal membership base. The average member is college educated, owns a home and earns about $100,000 a year, CNBC reports. Members are extremely loyal, with an overall renewal rate at 90.6 percent, research firm Trefis reports.