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1 Department of Biological Sciences, University of California, Santa Barbara, Goleta, California
1. Embryonic and adult Cymatogaster aggregata have been subjected to scale homotransplantations.
2. Homografts are rejected after a short period of time. The time required for graft rejection is temperature-dependent.
3. Increased sensitivity to homografts results from successive transplantations.
4. Intra-ovarian embryos used in these experiments were not capable of rejecting scale homografts.
5. Immature free-living fish rejected homografts, but more slowly than adults.
6. Pregnant females can transfer homograft sensitivity to intra-ovarian embryos. It is hypothesized that circulating antibody is passed to the embryo via the ovarian fluid and the embryonic hindgut.
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