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Interpretation of prior studies on molluscan allografts is complicated by the variety of experimental methods used and recurring reports of acute rejection of digestive gland implants. In this study, allografts of adult digestive gland, saccular kidney, mantle, albumin gland, brain, ovotestis, heart, or amoebocyte-producing organ (APO) were implanted into(More)
A clock recovery PLL is described for serial NRZ data transmission. The VCO works at only half the data rate, which means for a 1 Gb/s data rate the VCO runs at 500 MHz. A specially designed phase comparator uses both the rising and falling clock edges to compare clock and data. The VCO can typically be tuned from 350 MHz to 890 MHz and the PLL locks(More)
The posterior tip of juvenile snails, consisting of immature ovotestis, vesicular connective tissue, and digestive gland acini, all surrounded by body wall, was implanted into the hemocoel of allogeneic adult Biomphalaria glabrata. Recipient snails were either uninfected or had been infected 15 days previously with Schistosoma mansoni. Graft recipients were(More)
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