Fig. 2From: Feasibility and comparative analysis of Dirofilaria immitis microfilaria freezing and fixation for student instruction and assessment of clinical parasitology skillsModified Knott’s test slide preparations using variable testing conditions in Year 2 with microfilariae (mf) length and width measurements in microns and variable background erythrocytes and host cells. a. Non-cryopreserved mf with 2% formalin fixative. b. Cryopreserved mf with 2% formalin fixative. c. Non-cryopreserved mf with 2% acetic acid. d. cryopreserved mf with 2% acetic acidBack to article page