Compounds which increase the capacity of the male to induce conception.

Drugs used to increase fertility or to treat infertility.

The capacity to conceive or to induce conception. It may refer to either the male or female.

Compounds which increase the capacity to conceive in females.

A method of providing future reproductive opportunities before a medical treatment with known risk of loss of fertility. Typically reproductive organs or tissues (e.g., sperm, egg, embryos and ovarian or testicular tissues) are cryopreserved for future use before the medical treatment (e.g., chemotherapy, radiation) begins.

The inability of the male to effect FERTILIZATION of an OVUM after a specified period of unprotected intercourse. Male sterility is permanent infertility.

Inability to reproduce after a specified period of unprotected intercourse. Reproductive sterility is permanent infertility.

Diminished or absent ability of a female to achieve conception.

The number of births in a given population per year or other unit of time.

Mature male germ cells derived from SPERMATIDS. As spermatids move toward the lumen of the SEMINIFEROUS TUBULES, they undergo extensive structural changes including the loss of cytoplasm, condensation of CHROMATIN into the SPERM HEAD, formation of the ACROSOME cap, the SPERM MIDPIECE and the SPERM TAIL that provides motility.

Loss of a limb or other bodily appendage by accidental injury.

The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.

An ANGIOTENSIN II analog which acts as a highly specific inhibitor of ANGIOTENSIN TYPE 1 RECEPTOR.

A count of SPERM in the ejaculum, expressed as number per milliliter.

The total process by which organisms produce offspring. (Stedman, 25th ed)

The duct that is connected to the GALLBLADDER and allows the emptying of bile into the COMMON BILE DUCT.

Artificial introduction of SEMEN or SPERMATOZOA into the VAGINA to facilitate FERTILIZATION.

Preservation of cells, tissues, organs, or embryos by freezing. In histological preparations, cryopreservation or cryofixation is used to maintain the existing form, structure, and chemical composition of all the constituent elements of the specimens.

The thick, yellowish-white, viscid fluid secretion of male reproductive organs discharged upon ejaculation. In addition to reproductive organ secretions, it contains SPERMATOZOA and their nutrient plasma.

GENES with ALLELES that affect the PHENOTYPE associated with a nonallelic gene.

The process of germ cell development in the male from the primordial germ cells, through SPERMATOGONIA; SPERMATOCYTES; SPERMATIDS; to the mature haploid SPERMATOZOA.