Although this classification was widely accepted, further infrageneric classification was ( and still is ) needed to differentiate this widely diverse group.

Although Group VII viruses such as hepatitis B contain a DNA genome, they are not considered DNA viruses according to the Baltimore classification, but rather reverse transcribing viruses because they replicate through an RNA intermediate.

* Linear algebraic groups ( or more generally affine group schemes ) — These are the analogues of Lie groups, but over more general fields than just R or C. Although linear algebraic groups have a classification that is very similar to that of Lie groups, and give rise to the same families of Lie algebras, their representations are rather different ( and much less well understood ).

Although numerous classification schemes have been proposed, the superfamily is classically divided into three main classes ( A, B, and C ) with no detectable shared sequence homology between classes.

Although Greenberg did not produce an explicit argument for monogenesis, all of his classification work was geared toward this end.

Although phylogenetics itself is fundamental to modern-day systematics, its use for the description of new taxa, and placement within a classification scheme, is unrequired.

Although it is a phrase often used by newspapers, there is no such classification as " Maximum Secure ".

Although the classification of crustaceans has been quite variable, the system used by Martin and Davis largely supersedes earlier works.

Although the Dott classification scheme is widely used by sedimentologists, common names like greywacke, arkose, and quartz sandstone are still widely used by nonspecialists and in popular literature.

Although strictly part of the de Vaucouleurs system of classification, the Sd class is often included in the Hubble sequence.

Although the SYNOP code has no separate formal classification for vertical or multi-level clouds, the observer procedure for selecting numerical codes is designed to give high reporting priority to those genera or species that show significant vertical development.

Although the published classification deliberately did not use formal taxonomic ranks, other sources have treated each of the six as a separate kingdom.

Although clear examples of the difference between cake and bread are easy to find, the precise classification has always been elusive.

Although the ICHD-2 is the most complete headache classification there is and it includes frequency in the diagnostic criteria of some types of headaches ( primarily primary headaches ), it does not specifically code frequency or severity which are left at the discretion of the examiner.

Although the Emu was long classified with its closest relatives, the cassowaries, in the family Casuariidae, part of the ratite order Struthioniformes, an alternate classification has been recently adopted which splits the Casuariidae into their own order, Casuariformes.

Although he left Opabinia ′ s classification above the family level open, the annulated but not articulated body and the unusual lateral lobes with gills persuaded him that it may have been a representative of the ancestral stock from which both the annelids and arthropods arose.

Although the results were not quantitative and did not initially improve on morphological classification, they provided tantalizing hints that long-held notions of the classifications of birds, for example, needed substantial revision.

Although the results were not quantitative and did not initially improve on morphological classification, they provided tantalizing hints that long-held notions of the classifications of birds, for example, needed substantial revision.

Although the Rhodesian Ridgeback's bird hunting prowess has been well known throughout the breed's history ( the original description from the South African parent club belabors this point in fact ), it is important to note that the " Gundog " classification made in 1920s Southern Rhodesia and South Africa was not specifically about bird hunting.

Although the majority of the literature mentions only one genus transmitting Leishmania to humans ( Lutzomyia ) in America, a 2003 study by Galati suggested a new classification for American sand flies, elevating several subgenera to the genus level.

Although the film's sexual content was permissible in the X category, the OFLC's classification guidelines unambiguously state " No depiction of violence, sexual violence, sexualised violence, or coercion is allowed in the category.

Although only 75 feet width is required for this classification, the runway is 25 feet wider to allow it to serve as an alternate runway for turboprop and small regional jet aircraft.

Although the Capgras delusion is commonly called a syndrome, because it can occur as part of, or alongside, various other disorders and conditions, some researchers have argued that it should be considered a symptom, rather than a syndrome or classification in its own right.

Although a large number of coatings systems, particularly at low thicknesses fail cohesively by the cutting mechanism, frequently a second type of cohesive failure may also take place.

" Although heterogeneous, the major CAM systems have many common characteristics, including a focus on individualizing treatments, treating the whole person, promoting self-care and self-healing, and recognizing the spiritual nature of each individual.

Although systems similar to AARP existed in other systems, Banyan VINES for instance, nothing like NBP has existed until recently.

Although most cultural systems of astrology share common roots in ancient philosophies that influenced each other, many have unique methodologies which differ from those developed in the West.

Although the Aster was a clone of the TRS-80 model I it was in fact more compatible with the TRS-80 model III, and ran all the software of these systems including games.

Although such a conversion can be prone to loss, most modern audio systems use this approach as the techniques of digital signal processing are much more powerful and efficient than analog domain signal processing.

Although alkaloids act on a diversity of metabolic systems in humans and other animals, they almost uniformly invoke a bitter taste.

Although a number of different broadcast television systems were in use worldwide, the same principles of operation apply.

Although there are few examples of such systems competitive with traditional analysis techniques, potential advantages include size / portability, speed, and cost.

Although oxidation reactions are crucial for life, they can also be damaging ; plants and animals maintain complex systems of multiple types of antioxidants, such as glutathione, vitamin C, and vitamin E as well as enzymes such as catalase, superoxide dismutase and various peroxidases.

Although influential for a time their popularity did not generally survive the horrors of ideological warfare, as the competing ideologies utilized their systems in their platforms.

Although the butterfly effect may appear to be an esoteric and unlikely behavior, it is exhibited by very simple systems: for example, a ball placed at the crest of a hill may roll into any of several valleys depending on, among other things, slight differences in initial position.

Although newer systems have updated game mechanics significantly, the ideas presented in Bunnies & Burrows created the framework for modern role-playing games.

Although its population remains a topic of research and debate, newly identified agricultural systems in the Angkor area may have supported up to one million people.

Although feedback is an important aspect of control engineering, control engineers may also work on the control of systems without feedback.

Although control systems of various types date back to antiquity, a more formal analysis of the field began with a dynamics analysis of the centrifugal governor, conducted by the physicist James Clerk Maxwell in 1868 entitled On Governors.

Although deriving much of its semantics from Scheme and other Lisps — some implementations were in fact initially built within existing Lisp systems — Dylan has an ALGOL-like syntax rather than a Scheme-like prefix syntax.

Although several versions of many-worlds have been proposed since Hugh Everett's original work, they all contain one key idea: the equations of physics that model the time evolution of systems without embedded observers are sufficient for modelling systems which do contain observers ; in particular there is no observation-triggered wave function collapse which the Copenhagen interpretation proposes.

Although the Fortune Deck works as a randomizer, the results obtained by it are entirely arbitrary and subjective, and the GM's absolute power over the game is further emphasized by the three resolution systems: Karma ( the higher character ability wins, modified by situation ), Drama ( the GM decides what happens, by what they think most appropriate ), and Fortune ( more or less the same as the above, with interpretation flavored by a card draw ).

Although the inclusion of cognitive appraisal as one of the elements is slightly controversial, since some theorists make the assumption that emotion and cognition are separate but interacting systems, the component processing model provides a sequence of events that effectively describes the coordination involved during an emotional episode.

Although not as popular as other programming systems, Forth has enough support to keep several language vendors and contractors in business.

Although the maximum rate of fire was increased by firing multiple projectiles simultaneously, these weapons still needed to be reloaded after each discharge, which for multi-barrel systems like the mitrailleuse was cumbersome and time-consuming.

Although it had long been obsolete as a personal computer CPU, Intel and others had continued making the chip for embedded systems.