how soon after fertilization occurs within the uterine tube does the blastocyst begin implantation?
五味子的药用部位为()
at what location does the amniotic cavity develop?
a young insulin-dependent diabetic woman in her first pregnancy is concerned that her daily injection of insulin will cause a congenital malformation in her baby.what should the physician tell her?
提供企业在一定时期内现金和现金等价物流入和流出情况的报表是()
the most common site of a cervical fistula is the
which of the following is a major characteristic of meiosis i?
the trachea is lined with pseudostratified iliated columnar epithelium with goblet cells. this epithelium is derived from
during surgery for the removal of a thyroid tumor, a number of all masses of glandular tissue are noted just lateral to thethyroid gland. metastasis from the thyroid tumor is suspected, but histological ysisof a biopsy reveals parathyroid tissue and remnants of thymus. how can this finding be explained?