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The part of the lymphatic system that secretes a hormone is the:
Gametes
Reproductive cells (sperm and oocytes) that contain half the genetic material of an organism, which unite during fertilization to form a new organism.
Zygote
The new cell formed by the process of fertilization.
Fertilization
The process by which a sperm and an ovum—the male and female gametes, respectively—join to form a single new cell.
Gamete
A mature haploid male or female germ cell which is able to unite with another of the opposite sex in sexual reproduction to form a zygote.
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