Parasite culture was used to make a thin blood film on a glass slide. After air drying, the thin smear was fixed in methanol for about 30s. A fresh 5 to 10% , giemsa solution was prepared in phosphate buffer (list I). The slide was placed in a I staining jar and the giemsa solution was poured on the slide for 20 min and' subsequently rinsed thoroughly under running tap water. The stained parasites, were then observed under a light microscope using 100X objective.

Intensifying screens were from Kiran X-ray Screens, India. X -ray films were from Agfa -Gevaert, Belgium, Kodak, USA, or Hindustan Photo Films, India. Developer and fixer were from Hindustan Photo Films, India.

Chemicals were obtained from different commercial sources. Most of the chemicals such as amino acids, antibiotics, sugars, IPTG, ONPG and X-gal were obtained from Sigma Chemical Co. The media components for the growth of bacteria were mostly from Difco laboratories and Himedia. The materials used in the recombinant DNA experiments such as restriction endonucleases, T4-DNA ligase, DNA polymerases, polynucleotide kinaseand DNA size markers were obtained from companies including New England Biolabs, Invitrogen, Promega, Bangalore Genei, Sigmaand MBI Fermentas. Kits used for plasmids and genomic DNA isolation,purification of DNA fragments and PCR amplification were obtained from Qiagenand Invitrogen. High fidelity enzymes for PCR amplification were purchased from Sigma. The oligonucleotide primers used in this study were synthesized by Xcelris genomics orMWG Biotech. The radioactive chemicals were procured from Jonaki