Members of the genus Haemophilus are fastidious in nature. i.e. they require extra nutritional supplements in order to grow. Some Hemophilus require only X factor (haemin-which is present on blood agar) or only V factor (Nicotinamide-adenine dinucleotide, NAD- which is present within the blood cells) or a combination of both. So, Haemophilus influenzae grows only […]