T-shaped uterus T-shaped uterus A t-shaped uterus is a type of uterine malformation wherein the uterus is shaped resembling the letter T. This is typically observed in DES-exposed women. It is recognised in the ESHRE/ESGE classification, and is associated with failed implantation, increased risk of ectopic pregnancy, miscarriage and preterm delivery. There is a surgical procedure to correct the malformation. The t-shaped malformation is commonly associated with in-utero exposure (the so-called "DES-daughters") to DES, although it is also presented congenitally. Women are often diagnosed with this condition after several failed pregnancies, proceeded by exploratory diagnostic procedures, such as magnetic resonance, sonography, and
Bone tool Bone tool In archaeology, a bone tool is a tool created from bone. A bone tool can conceivably be created from almost any bone, and in a variety of methods. Bone tools have been documented from the advent of "Homo sapiens" and are also known from "Homo neanderthalensis" contexts or even earlier. Bone has been used for making tools by virtually all hunter-gatherer societies, even when other materials were readily available. Any part of the skeleton can potentially be utilized; however, antlers and long bones provide some of the best working material. Long bone fragments can be shaped, by scraping