Introduction:Fine Needle Aspiration Cytology (FNAC) is used widely for the preliminary pre-operative diagnosis of all superficial palpable lesions and for deep seated lesions under ultrasound guidance. Though Pap stain, May GrunwaldGiemsa (MGG) and Haematoxylin and Eosin (H & E) stains are used commonly, Leishman stain provides good cytoplasmic and background details. Hence, it can beused in ad...

Although inexpensive and easy to perform, the negative staining technique of Heine for the detection of Cryptosporidium spp. has been largely neglected. The lack of familiarity with the negative staining technique, the misconception that a phase-contrast microscope is indispensible and inferior results due to Köhler-illumination, are possible explanations for its low popularity. While the modif...