cow, particularly when linked with Apis; or as a scorpion. She also took the form of a tree or a woman emerging from a tree, sometimes offering food and water to deceased souls. This form alluded to the maternal nourishment she provided. Beginning in the New Kingdom, thanks to the close links between Isis and Hathor, Isis took on Hathor's attributes, such as a sistrum rattle and a headdress of cow horns enclosing a sun disk. Sometimes both headdresses were combined, so the throne glyph sat atop the sun disk. In the same era, she began to wear the insignia of a human queen, such as a vulture-shaped crown on her head and the royal uraeus, or rearing cobra, on her brow. In Ptolemaic and Roman times, statues and figurines of Isis often showed her in a Greek sculptural style, with attributes taken from Egyptian and Greek tradition. Some of these images reflected her linkage with other goddesses in novel ways. Isis-Thermuthis, a combination of Isis and Renenutet who represented agricultural fertility, was depicted in this style as a woman with the lower body of a snake. Figurines of a woman wearing an elaborate headdress and exposing her genitals may represent Isis-Aphrodite. The tyet symbol, a looped shape similar to the ankh, came to be seen as Isis's emblem at least as early as the New Kingdom, though it existed long before. It was often made of red jasper and likened to Isis's blood. Used as a funerary amulet, it was said to confer her protection on the wearer. Worship Relationship with royalty Despite her significance in the Osiris myth, Isis was originally a minor deity in the ideology surrounding the living king. She played only a small role, for instance, in the Dramatic Ramesseum Papyrus, the script for royal rituals performed in the reign of Senusret I in the Middle Kingdom. Her importance grew during the New Kingdom, when she was increasingly connected with Hathor and the human queen. The early first millennium BCE saw an increased emphasis on the family triad of Osiris, Isis, and Horus and an explosive growth in Isis's popularity. In the fourth century BCE, Nectanebo I of the Thirtieth Dynasty claimed Isis as his patron deity, tying her still more closely to political power. The Kingdom of Kush, which ruled Nubia from the eighth century BCE to the fourth century CE, absorbed and adapted