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Charles R. Sterling, Masamichi Aikawa, Jerome P. Vanderberg, The Passage of Plasmodium berghei Sporozoites through the Salivary Glands of Anopheles stephensi: An Electron Microscope Study, The Journal of Parasitology, Vol. 59, No. 4 (Aug., 1973), pp. 593-605
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Sterling et al. (1973) studied this question.
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