<prompt> When transfer factor is given as treatment results in -Natural active immunityAificial active immunityAificial passive immunityAdoptive immunity  <response>: Adoptive immunity: a special type of immunisation is the injection of immunologically competent lymphocytes. - instead of whole lymphocytes, an extract of immunologically competent lymphocytes, known as the transfer factor can be used. This has been attempted in the treatment of ceain types of diseases like lepromatous leprosy. Reference: Anathanarayan panikers 9th edition, pg no:84 p 