fusion of spermatozoa with ova (of a starfish) was observed by Oskar Hertwig in 1876. In animals, egg cells are also known as ova (singular ovum, from the...

smaller, motile gametes are spermatozoa and the larger, non-motile gametes are ova. These fuse to form zygotes, which develop via mitosis into a hollow sphere...

mixing human sperm and animal ova, or animal sperm and human ova. Human chimera embryos are human embryos that have had animal cells added to them during...

drama that aired on WOWOW in 2000. A four-volume original video animation (OVA) series was produced from 2002 and 2004. In 2011, a twelve-episode live-action...

Young Animal Arashi magazine since February 2014. The first season of an anime television adaptation premiered on January 7, 2015. The first OVA episode...

contains hundreds of ova (singular ovum). Approximately every 28 days, the pituitary gland releases a hormone that stimulates some of the ova to develop and...

heterogamous—females producing larger gametes (ova) and males producing smaller gametes (sperm). In nearly all animal species, offspring are carried by the female...

mixing human sperm and animal ova, or animal sperm and human ova. Human chimera embryos are human embryos that have had animal cells added to them during...

ova in areas where there is a large amount. These methods make it possible for helminth ova to be within the healthy requirements of ≤1 helminth ova per...

volumes. The series was adapted into a three-episode original video animation (OVA) produced by Pink Pineapple and animated by OLM in 1997. It was released...

Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse, which can lead to twin...

are called male, while organisms that produce larger, non-mobile gametes (ova, often called egg cells) are called female. An organism that produces both...

The Himba (singular: OmuHimba, plural: OvaHimba) are an ethnic group with an estimated population of about 50,000 people living in northern Namibia, in...

educational OVA was made, titled Doraemon: Nobita to Mirai Note (ドラえもん のび太と未来ノート), where the main characters express the hope for a better Earth. The OVA was...

serialized in Sebun Comics magazine in June 1997. The OVA series was released in 2000. The OVA had also received two video games for the PlayStation and...

than one distinct genotype. Animal chimeras can be produced by the merger of two (or more) embryos. In plants and some animal chimeras, mosaicism involves...

from the death-stench, to create a vaccine to defeat the disease. In the OVA version, instead of Kaori, Tadashi becomes infected and is attached to a...

test Human–animal hybrid Recombinant DNA Yanagimachi, R.; Yanagimachi, H.; Rogers, B. J. (November 1976). "The Use of Zona-Free Animal Ova as a Test-System...

included are two bonus OVA Short Story DVDs that were delivered to customers who ordered the first six Blu-ray/DVDs for the first OVA and the next six Blu-ray/DVDs...

chapters collected into 7 tankōbon volumes. It was adapted into a 2-episode OVA series animated by Production I.G in 1993. ADV Films had previously licensed...

species, spermatozoa can fertilize ova externally or internally. In external fertilization, the spermatozoa fertilize the ova directly, outside of the female's...

Senki アルスラーン戦記, Part One 1986–1990, Part Two 1991–2017) = Adapted into an OVA series by J.C.Staff and a TV series by Liden Films and Sanzigen. Sohryuden:...

episode is based on the Metal Mutation line. The OVA was produced by Bee Media and Tsuburaya Productions. The OVA features most of the same cast as TV Tokyo's...

were broadcast on Fuji TV from 1989 to 1992. In addition, they released 12 OVAs and three films. In 2011, a live-action television special was produced and...

become estrous, mentally and physically receptive to copulation. Because the ova survive and can be fertilized for a week after ovulation, more than one male...

stages in urine sediment. The ova are characteristic in appearance: football-shaped with plugs at both ends of the ova. There are so far no true vaccines...

the water. Some also release ova into the water, while others capture sperm via their tentacles to fertilize their ova internally. In some species the...

single, titled "Bend It Over" (oftentimes incorrectly titled as "Bend It Ova") on March 12, 2012. On January 2, 2013, Chris released his new mixtape,...

transform Sayaka into a Magical Warrior. His animal form is similar to a purple ferret (a yellow one in the OVA). He poses as Sayaka's private tutor. He is...

contributions were experimental demonstrations of fertilisation between ova and spermatozoa, and in vitro fertilisation. Spallanzani was born in Scandiano...