In the field of road transport, an interchange is a road junction that uses grade separation, and typically one or more ramps, to permit traffic on at least one highway to pass through the junction without interruption from other crossing traffic streams. It differs from a standard intersection, where roads cross at grade. Interchanges are almost always used when at least one road is a controlled-access highway (freeway or motorway) or a limited-access divided highway (expressway), though they are sometimes used at junctions between surface streets. 

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Directional T interchanges use flyover/underpass ramps for both connecting and mainline segments, and they require a moderate amount of land and moderate costs since only two levels or roadway are typically used. They get their name due to their resemblance to the capital letter "T", depending upon the angle from which the interchange is seen and the alignment of the roads that are interchanging.

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A complete interchange has enough ramps to provide access from any direction of any road in the junction to any direction of any other road in the junction. A complete interchange between a freeway and another road (not a freeway) requires at least four ramps. Complete interchanges between two freeways generally have at least eight ramps, as having fewer would considerably reduce capacity and increase weaving. Using U-turns, the number for two freeways can be reduced to six, by making cars that want to turn left either pass by the other road first, then make a U-turn and turn right, or turn right first and then make a U-turn. Depending on the interchange type and the connectivity offered other numbers of ramps may be used. For example, if a highway interchanges with a highway containing a collector/express system, additional ramps can be used to strictly link the interchanging highway with the collector and express lanes respectively. For highways with high-occupancy vehicle (HOV) lanes, ramps can be used to service these carriageways directly, thereby increasing the number of ramps used.

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High concentrations of Cripto are found in both the trophoblast and inner cell mass, along the primitive streak as the second epithelial-mesenchymal transformation event occurs to form the mesoderm, and in the myocardium of the developing heart. Though no specific defect has been formally associated with mutations in Cripto, in vitro studies that disrupt gene function at various times during development have provided glimpses of possible malformations. For example, inactivation of Cripto during gastrulation disrupted the migration of newly formed mesenchymal mesoderm cells, resulting in the accumulation of cells around the primitive streak and eventual embryonic death.[12] Other results of Cripto disruption include the lack of posterior structures.[13][14] and a block on the differentiation of cardiac myocyte,.[15] both of which lead to embryonic death.

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Bitcoin Cash trades on digital currency exchanges including Bitstamp, Coinbase, Gemini, Kraken, and ShapeShift using the Bitcoin Cash name and the BCH ticker symbol for the cryptocurrency. A few other exchanges use the BCC ticker symbol, though BCC is commonly used for Bitconnect. On 26 March 2018, OKEX removed all Bitcoin Cash trading pairs except for BCH/BTC, BCH/ETH and BCH/USDT due to "inadequate liquidity". As of May 2018, daily transaction numbers for Bitcoin Cash are about one-tenth of those of bitcoin. By November 2017 the value of Bitcoin Cash, which had been as high as $900, had fallen to around $300, much of that due to people who had originally held Bitcoin selling off the Bitcoin Cash they received at the hard fork.

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Bitcoin Cash was launched in August 2017, as a direct response to small block sizes on the Bitcoin code. 1MB block sizes were not meeting the demand of the growing community, so a group of dissatisfied crypto enthusiasts decided to create a ‘hard fork’ of the Bitcoin blockchain, with an increased 8MB block size. No one person currently takes credit for the token’s creation; rather it is attributed to a de-centralized group of developers.

A standard stack interchange includes roads on four levels, also known as a four-level stack: including the two perpendicular highways, and one more additional level for each pair of left-turn ramps. These ramps can be stacked in various configurations above, below, or between the two interchanging highways. This makes them distinct from Turbine interchanges, where pairs of left-turn ramps are separated but at the same level. There are some stacks that could be considered five-level; however, these remain four-way interchanges, since the fifth level actually consists of dedicated ramps for HOV/bus lanes or frontage roads running through the interchange.

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The r/BitcoinCash subreddit is a forum dedicated to discussing the cryptocurrency Bitcoin Cash (BCH). The aim of this subreddit is to cultivate a space for constructive discussion about Bitcoin Cash. Intentionally disruptive behaviour and heavily off-topic discussion will be moderated accordingly. Please refer to the sidebar for the subreddit rules.

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Cripto is an EGF-CFC or epidermal growth factor-CFC, which is encoded by the Cryptic family 1 gene.[5] Cryptic family protein 1B is a protein that in humans is encoded by the CFC1B gene.[6][7] Cryptic family protein 1B acts as a receptor for the TGF beta signaling pathway. It has been associated with the translation of an extracellular protein for this pathway.[5] The extracellular protein which Cripto encodes plays a crucial role in the development of left and right division of symmetry. Mutations of it could cause congenital heart disease.[8]

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