Which surface molecule delivers the first signal for B-cell activation

45-" Larva currens" is the name given to the migrating larva of:

46- Concerning ancylostomiasis duodenale, which of the following is infective:

47- A patient presenting with chronic diarrhoea, with history of eating improperly cooked whole infected fish, may be infected with:

48-Walking barefooted poses a risk of acquiring:

49-Disseminated systemic infection in AIDS patient is reported with:

50-Which of the following parasites infects man by skin penetration:

51-Infection with Fasciola is through:

52- Undercooked meat is the source of infection with:

53- Lymnaea is the snail intermediate host for:

54-Man is infected by Heterophyes through:

55-Sheep liver fluke is the common name of:

56-Maldigestion is seen with ascariasis due to:

57-Egg emboli may cause:

58-The following about Fasciola spp. infection is TRUE:

59- Pyrimethamine may be used in treatment of:

60-Serious & sometimes fatal complications of ascariasis are due to:

61-A patient on immunosuppressive therapy after kidney transplantation, presented with abrupt onset of sever watery diarrohea, nausea, vomiting, anorexia and fatigue. What is your provisional diagnosis?