51.   Lincoln Laboratory are developing a system known as Canary in which human immune cells are genetically engineered to latch onto pathogens and emit a signal when they do.

52.   Later vaccines targeted the virus within those immune cells by raising a cytotoxic, or cell-killing, response.

53.   Low-dose chemotherapy drugs, such as the methotrexate Looram was taking, attempt to depress immune cells in a shotgun manner to suppress the disease.

54.   Neupogen has been shown to stimulate the production of healthy immune cells.

55.   One is to administer monoclonal antibodies, large Y-shaped proteins that originate from the immune cells of mice.

56.   One called astragalus, however, has shown promise in restoring function to compromised immune cells taken from cancer patients, says Colorado ethnobotanist Robert McCaleb.

57.   Or perhaps, the scientists added, the extra insulin allows the beta cells to rest, and in this peaceful state they escape the immune cell assault.

58.   One way may be to alter pig endothelial cells so they are not recognized by human immune cells involved in DXR.

59.   People with advanced AIDS desperately need a new supply of immune cells because theirs are relentlessly killed by HIV.

60.   Recent research has shown that latently infected immune cells die once they have been induced to produce more virus.